ADC/DAC
Products (181)
AD4080BCPZ - 20-Bit, 40 MSPS SAR ADC | Analog Devices
The AD4080BCPZ is a high-speed, low noise, low distortion, 20-bit, Easy Drive, successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It operates at a sampling rate of 40 MSPS and maintains a signal-to-noise and distortion ratio (SINAD) greater than 90 dBFS at signal frequencies in the MHz range. The device features a differential input structure and integrates critical supply and reference decoupling capacitors in the package to simplify PCB layout and reduce solution footprint. The AD4080 is recommended for new designs and is available in a compact LFCSP package. A SAR ADC is a type of analog-to-digital converter that uses a successive approximation register to convert an analog input to a digital output by comparing the input against a binary-weighted reference voltage. SAR ADCs are known for their high resolution, low power consumption, and fast conversion times, making them ideal for applications requiring high-speed, high-precision data acquisition. The AD4080 belongs to the family of precision SAR ADCs, which are essential components in signal processing chains for industrial, medical, and communications systems. Key features of the AD4080 include its 20-bit resolution, 40 MSPS sampling rate, and Easy Drive input structure that minimizes input-dependent signal currents, reducing converter-induced settling artifacts. The continuous acquisition architecture allows settling across multiple conversion cycles, enhancing performance in multiplexed systems. The integrated decoupling capacitors ensure optimal performance without external components, simplifying design and reducing board space. Technically, the AD4080 employs a high-speed SAR architecture with a low-noise comparator and precision DAC, achieving excellent linearity and dynamic performance. The device operates from a single supply and includes a reference buffer, reducing external component count. The Easy Drive feature reduces signal chain complexity and power consumption, enabling greater channel density and flexibility in companion component selection. Typical applications include high-speed data acquisition systems, medical imaging, communications infrastructure, and industrial instrumentation. The AD4080's combination of high resolution, speed, and low noise makes it suitable for demanding measurement and signal processing tasks. When designing with the AD4080, ensure proper decoupling of the supply and reference pins, and follow the recommended layout guidelines in the datasheet to achieve optimal performance. The integrated decoupling capacitors reduce external component requirements, but careful PCB design is still essential for high-speed operation.
AD4080BCPZ-RL7 - 20-Bit, 40 MSPS SAR ADC | Analog Devices
The AD4080BCPZ-RL7 is a high-speed, low-noise, low-distortion, 20-bit successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It features a differential input, Easy Drive architecture, and a maximum sampling rate of 40 MSPS. The device maintains a signal-to-noise and distortion ratio (SINAD) greater than 90 dBFS at signal frequencies above 1 MHz, making it suitable for precision, wide-bandwidth data acquisition systems. The AD4080BCPZ-RL7 is offered in a 49-ball CSPBGA (5x5 mm) package and is recommended for new designs. A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input into a digital output. It operates by comparing the input signal against a reference voltage using a successive approximation register, which narrows down the value bit by bit. SAR ADCs are known for their high resolution, low power consumption, and fast conversion times, making them ideal for applications such as industrial process control, medical imaging, and communications. The AD4080BCPZ-RL7 belongs to the family of precision SAR ADCs, which are essential components in modern data acquisition systems. Key features of the AD4080BCPZ-RL7 include its 20-bit resolution, 40 MSPS sampling rate, and differential input architecture. The Easy Drive design simplifies the input drive requirements, reducing the need for external components. The device also offers low power consumption, making it suitable for battery-powered and portable applications. The high SINAD performance ensures accurate signal reproduction even at high frequencies, which is critical for applications such as radar, lidar, and high-speed instrumentation. From a technical perspective, the AD4080BCPZ-RL7 utilizes a precision SAR architecture with an internal reference and track-and-hold circuit. The device operates from a single 5V supply and features a serial interface for data output. The 49-ball CSPBGA package provides excellent thermal performance and a compact footprint, enabling high-density PCB designs. The ADC also includes a power-down mode to conserve energy during idle periods. Typical applications for the AD4080BCPZ-RL7 include high-speed data acquisition systems, medical imaging equipment, communications infrastructure, and industrial automation. Its combination of high resolution, speed, and low noise makes it an excellent choice for applications that require precise analog-to-digital conversion. The device is also suitable for use in test and measurement instruments, where accuracy and reliability are paramount. When designing with the AD4080BCPZ-RL7, it is important to consider the input signal conditioning and reference voltage stability. Proper decoupling of the power supply and careful PCB layout are essential to achieve the specified performance. The device's Easy Drive feature simplifies the input drive, but attention should be paid to the input common-mode voltage range to ensure optimal operation.
AD4081 - 20-Bit 20MSPS SAR ADC | Analog Devices
The AD4081 is a high-speed, low-noise, low-distortion, 20-bit, Easy Drive, successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It achieves a signal-to-noise and distortion (SINAD) ratio greater than 90 dBFS at signal frequencies exceeding 1 MHz, making it suitable for precision, wide-bandwidth applications. The device operates as a differential SAR ADC with a maximum sampling rate of 20 MSPS and a latency of 77.50 ns. It is available in a 49-ball CSPBGA (5x5 mm) package, with the specific variant AD4081BBCZ listed on DigiKey. A SAR ADC is a type of analog-to-digital converter that uses a successive approximation register to perform a binary search through all possible quantization levels before converging on the final digital output. This architecture offers a balance of high speed, high resolution, and low power consumption, making SAR ADCs ideal for applications such as data acquisition systems, medical imaging, and industrial process control. The AD4081 belongs to the broader category of data converters, which are essential components in mixed-signal systems that bridge the analog and digital domains. Key features of the AD4081 include its 20-bit resolution, 20 MSPS sampling rate, and Easy Drive input structure that minimizes input-dependent signal currents, reducing converter-induced settling artifacts. The device supports continuous acquisition, which relaxes driver constraints and simplifies the signal chain. Its high SINAD performance at frequencies above 1 MHz enables accurate digitization of wideband signals, making it suitable for applications like radar, communications, and test equipment. Technically, the AD4081 leverages a differential input architecture to reject common-mode noise and improve dynamic range. The Easy Drive feature reduces the need for high-bandwidth, high-power drivers, thereby lowering overall system power consumption and enabling greater channel density. The device's low latency of 77.50 ns is critical for real-time control loops and high-speed feedback systems. Typical applications include high-speed data acquisition, medical ultrasound, industrial automation, and communications infrastructure. The AD4081's combination of high resolution and high speed makes it ideal for digitizing wideband signals with excellent fidelity. When designing with the AD4081, ensure proper decoupling of the power supply pins and careful layout of the analog input traces to maintain signal integrity. The Easy Drive input structure allows for simpler driver design, but attention to reference voltage stability is essential for achieving the specified performance.
AD4083BCPZ - 16-Bit 40MSPS SAR ADC | Analog Devices
The AD4083BCPZ is a high-speed, low-noise, low-power, 16-bit successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It operates at a maximum sampling rate of 40 MSPS and is designed for applications requiring high resolution and high speed with minimal power consumption. The device features an Easy Drive architecture that simplifies the analog front-end design by reducing input drive requirements. It includes an integrated low-drift reference buffer, low-dropout (LDO) regulators for the ADC core and digital interface supply rails, and a 16K result data FIFO to reduce the load on the digital host. Critical supply and reference decoupling capacitors are integrated in the package, minimizing external component count and board space. An ADC (analog-to-digital converter) is an electronic device that converts a continuous analog signal into a discrete digital representation. The AD4083 is a SAR ADC, which uses a successive approximation algorithm to determine the digital output bit by bit. SAR ADCs are known for their high resolution, low power, and fast conversion times, making them suitable for applications such as medical imaging, communications, and industrial data acquisition. The AD4083 is part of the broader class of data converters, which are essential in bridging the analog and digital domains in electronic systems. Key features of the AD4083 include a signal-to-noise and distortion (SINAD) ratio greater than 90 dBFS, ensuring excellent dynamic performance. The device operates from a single 1.8 V analog supply and a 1.8 V digital interface supply, with power dissipation typically below 100 mW at 40 MSPS. The integrated LDO regulators allow the ADC to generate its own internal supply rails, simplifying power supply design. The 16K FIFO reduces the need for high-speed data transfer to the host processor, enabling efficient data capture in burst-mode applications. The AD4083 is available in a 49-ball CSPBGA (5x5 mm) package, which is compact and suitable for space-constrained designs. The device is specified for operation over the industrial temperature range of -40°C to +125°C. It is recommended for new designs, indicating active lifecycle status. The AD4083 is ideal for applications such as medical ultrasound, radar systems, and high-speed data acquisition, where high resolution and low power are critical. When designing with the AD4083, it is important to provide a clean, low-noise analog supply and a stable reference voltage. The integrated LDO regulators help, but external decoupling is still recommended. The Easy Drive architecture reduces the need for a high-bandwidth input driver, but a suitable driver amplifier may still be required for optimal performance. The FIFO can be used to buffer data and reduce the interrupt load on the host processor.
AD4084 - 16-Bit 20 MSPS SAR ADC | Analog Devices
The AD4084 is a 16-bit, 20 MSPS successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices, featuring a differential input and Easy Drive technology. It is designed for high-speed, low-noise, low-distortion precision data acquisition, delivering excellent dynamic performance while simplifying the signal chain. The device is available in a 49-ball CSPBGA (5x5 mm) package, suitable for space-constrained industrial and communications systems. A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input into a digital output. It typically offers high resolution, low power consumption, and fast conversion times, making it ideal for applications requiring a balance between speed and precision. The AD4084 belongs to the ADC family, which falls under data converters, a subset of analog-to-digital converters, and ultimately within the broader category of mixed-signal integrated circuits. Key features of the AD4084 include 16-bit resolution, a 20 MSPS sampling rate, and a differential input structure that reduces common-mode noise. The Easy Drive technology minimizes input-dependent signal currents, reducing converter-induced settling artifacts and enabling simpler driver circuitry. The device also integrates digital filtering, which enhances dynamic range and simplifies post-processing. With a 1ku list price starting at $31.68, it offers a cost-effective solution for high-performance data acquisition. Technically, the AD4084 employs a precision SAR architecture with an internal reference and track-and-hold circuit, achieving high linearity and low noise. The differential input provides excellent common-mode rejection, while the Easy Drive input structure reduces the need for external high-bandwidth drivers, lowering system power and complexity. The device operates from a single supply and supports a wide input range, making it versatile for various signal levels. Typical applications include industrial process control, medical imaging, communications infrastructure, and test and measurement equipment. In these systems, the AD4084's combination of speed, resolution, and low noise ensures accurate digitization of fast, small-amplitude signals. Its Easy Drive feature is particularly beneficial in multi-channel systems where channel density and power efficiency are critical. When designing with the AD4084, ensure proper decoupling of the power supply and reference pins, and consider the input drive requirements to fully exploit the Easy Drive benefits. The differential input should be driven with a low-impedance source to maintain performance. Additionally, the digital interface should be isolated from noisy logic to prevent coupling into the analog section.
AD4086BCPZ - 14-Bit 40 MSPS SAR ADC | Analog Devices
The AD4086BCPZ is a 14-bit, 40 MSPS successive approximation register (SAR) analog-to-digital converter from Analog Devices, offered in a compact LFCSP package. It is recommended for new designs and integrates a low drift reference buffer, low-dropout (LDO) regulators for the ADC core and digital interface supply rails, a 16K result data FIFO, and internal supply/reference decoupling capacitors. These features simplify data converter integration and reduce external component count. What is a SAR ADC? A SAR ADC converts an analog input into a digital code by performing a binary search across a capacitor DAC under control of a successive-approximation register. SAR ADCs are favored for high-speed, low-power precision data acquisition where low latency and a single-cycle sample-and-hold are important. Within the ADC hierarchy, SAR converters sit between delta-sigma devices and pipeline converters in the speed-versus-resolution trade-off. The AD4086's 14-bit resolution and 40 MSPS throughput make it suitable for applications that require high dynamic range at speed. The integrated 16K FIFO reduces host-side interrupt loading, while the internal LDOs and reference buffer lower external BOM count. Low noise and low power design support dense, channel-count systems. Because critical supply and reference decoupling capacitors are integrated inside the package, PCB layout is simplified and parasitic inductance from external decoupling is minimized. The LDOs generate clean core and digital rails, reducing the need for multiple external regulators. The low drift reference buffer maintains ADC accuracy across temperature. Typical applications include medical imaging front ends, high-speed data acquisition, communications receivers, industrial instrumentation, and portable test equipment. The 40 MSPS rate can address IF/baseband sampling in communications, while low power supports battery-operated units. When designing with the AD4086, pay attention to the input drive amplifier settling time and the reference source impedance. The integrated 16K FIFO should be used to burst-read conversion results to minimize digital host overhead. Ensure the input common-mode range matches the driver output for optimum SNR/SFDR.
AD4130-4BCPZ - 24-Bit Ultra-Low Power Sigma-Delta ADC | Analog Devices
The AD4130-4BCPZ is a 24-bit, ultra-low power, sigma-delta analog-to-digital converter (ADC) from Analog Devices, designed for high-precision, low-frequency measurement applications. It integrates a programmable gain amplifier (PGA), a crosspoint multiplexer, a smart sequencer, and a deep FIFO, all in a compact 32-lead LFCSP (5x5 mm) package. Operating from a single analog supply of 1.71 V to 3.6 V, it achieves a current consumption of only 28.5 μA at gain = 1 and 32.5 μA at gain = 128 while continuously converting, making it ideal for battery-powered and loop-powered systems. An ADC (analog-to-digital converter) is a device that converts continuous analog signals into discrete digital numbers. The AD4130-4 is a sigma-delta ADC, which uses oversampling and noise shaping to achieve high resolution (24 bits) and excellent noise performance for low-bandwidth signals. It belongs to the family of precision data converters, which are essential in industrial process control, medical instrumentation, and smart sensor nodes. The integration of a PGA and multiplexer reduces external component count and simplifies system design. Key features include 4 differential or 8 single-ended/pseudo-differential inputs, a crosspoint multiplexer that allows any input pair to be routed to the PGA and ADC, and built-in diagnostic functions such as open-wire detection, internal temperature sensor, reference detection, and analog input overvoltage/undervoltage detection. The device also supports duty cycling modes (1/4 or 1/16) to reduce average current to as low as 5 μA, and a standby mode at 0.5 μA and power-down mode at 0.1 μA. The AD4130-4 uses a 24-bit sigma-delta modulator with a digital filter, providing high accuracy and noise rejection. The smart sequencer and per-channel configuration minimize host processor load, while the deep 256-sample FIFO allows autonomous data collection. The SPI interface enables easy integration with microcontrollers. The device is specified for operation from -40°C to +125°C, suitable for industrial environments. Typical applications include industrial process control (4-20 mA loops), temperature and pressure measurement, battery monitoring, and portable medical devices. Its ultra-low power consumption and integrated diagnostics make it particularly suited for smart transmitters and IoT sensor nodes. When designing with the AD4130-4, ensure proper decoupling of the analog supply and reference pins, and use a clean ground plane to minimize noise. The SPI interface should be isolated if used in noisy industrial environments.
AD4170BCPZ - 24-Bit Sigma-Delta ADC, 500kSPS | Analog Devices
The AD4170BCPZ is a high-speed, low-noise, 24-bit sigma-delta analog-to-digital converter (ADC) from Analog Devices, designed for precision measurement applications requiring DC to 50 kHz input bandwidth. It supports output data rates from 7.6 SPS up to 500 kSPS, making it suitable for both low-speed high-resolution and high-speed data acquisition systems. The device is available in a 32-lead LFCSP (4x6 mm) package, offering a compact solution for space-constrained designs. A sigma-delta ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution. It is widely used in precision measurement, industrial process control, and medical instrumentation where accuracy and low noise are critical. The AD4170BCPZ integrates a low-noise programmable gain amplifier (PGA) and a precision voltage reference, reducing external component count and simplifying system design. Key features include a 24-bit resolution, 8 input channels (configurable as 4 differential or 8 single-ended), and a maximum output data rate of 500 kSPS. The device offers a low noise floor, enabling accurate measurement of small signals. It also includes a flexible digital filter, allowing users to trade off between speed and noise performance. The integrated PGA provides gain settings from 1 to 128, accommodating a wide range of sensor outputs. The AD4170BCPZ operates from a 2.5V to 5.5V analog supply and a 1.8V to 5.5V digital interface supply, ensuring compatibility with modern microcontrollers and DSPs. It features a serial peripheral interface (SPI) for communication, supporting both 3-wire and 4-wire modes. The device also includes a reference detect function and a temperature sensor, enhancing its versatility in system monitoring applications. Typical applications include precision weigh scales, strain gauge measurements, thermocouple and RTD temperature sensing, and industrial process control. The high output data rate and low noise make it ideal for vibration analysis and high-speed data acquisition systems. The device's integrated features reduce board space and bill of materials, making it a cost-effective solution for precision measurement. When designing with the AD4170BCPZ, ensure proper decoupling of the analog and digital supplies to minimize noise coupling. The reference input should be bypassed with a low-ESR capacitor to maintain stability. The SPI interface should be isolated from noisy digital traces to preserve the ADC's noise performance.
AD4630-24BCPZ - 24-Bit 2MSPS Dual SAR ADC | Analog Devices
The AD4630-24BCPZ is a two-channel, simultaneous sampling, Easy Drive, 2 MSPS successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It delivers 24-bit resolution with a guaranteed maximum ±0.9 ppm INL and no missing codes across the full −40°C to +125°C temperature range. The device operates from a 5 V analog supply and a 1.8 V digital supply, and it is available in a 64-ball CSPBGA (7x7 mm) package. A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input into a digital output. It is known for its high speed, low power, and excellent accuracy, making it ideal for precision measurement applications. The AD4630-24 belongs to the SAR ADC family, which is a subset of data converters, which are essential components in signal processing chains. Key features include a typical dynamic range of 106 dB when using a 5 V reference, a low noise floor that enables signal chains requiring less gain and lower power, and an Easy Drive architecture that simplifies the analog front-end design. The device also integrates a power-on reset (POR) circuit that resets the ADC at initial power-up or whenever VDD_5V or VDD_1.8V drops below the specified operating range. The AD4630-24 uses a precision capacitive DAC and a high-speed comparator to achieve its performance. The Easy Drive feature reduces the input current and simplifies the drive amplifier requirements, allowing for direct connection to sensors and transducers. The device supports both SPI and parallel interfaces, providing flexibility in system integration. Typical applications include precision data acquisition systems, medical instrumentation, industrial process control, and scientific instrumentation. The high resolution and low noise make it suitable for applications that require accurate measurement of small signals, such as weigh scales, pressure sensors, and temperature sensors. When designing with the AD4630-24, it is important to provide a clean, low-noise power supply and a stable reference voltage. The device's integrated bypass capacitors in the BGA package reduce the need for external components and improve performance. Proper PCB layout, including a solid ground plane and short traces, is essential to achieve the specified performance.
AD4632-24BCPZ - 24-Bit 500kSPS Dual SAR ADC | Analog Devices
The AD4632-24BCPZ is a dual-channel, simultaneous sampling, 24-bit successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It operates at a maximum throughput of 500 kSPS and features the Easy Drive™ architecture, which simplifies the analog front-end design by reducing input drive requirements. The device is available in a 64-ball CSP_BGA (7x7 mm) package, integrating critical power supply and reference bypass capacitors to minimize footprint and board sensitivity. A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input into a digital output. It is known for its high resolution, low power consumption, and fast conversion times, making it ideal for precision measurement applications. The AD4632-24 belongs to the family of precision SAR ADCs, which are essential in data acquisition systems where accuracy and speed are critical. Key features of the AD4632-24BCPZ include a guaranteed maximum ±0.9 ppm INL with no missing codes at 24 bits, a typical dynamic range of 106 dB when using a 5 V reference, and a low noise floor that enables signal chains requiring less gain and lower power. The device operates over the industrial temperature range of -40°C to +125°C, ensuring reliable performance in harsh environments. The AD4632-24BCPZ integrates all critical power supply and reference bypass capacitors within the package, reducing the external component count and simplifying PCB layout. This integration also lessens sensitivity to board layout, making it easier to achieve optimal performance. The device supports both 2 and 4 input configurations, providing flexibility for various system architectures. Typical applications include precision data acquisition systems, medical instrumentation, industrial process control, and scientific instrumentation. The high resolution and low noise make it suitable for applications requiring accurate measurement of small signals, such as weigh scales, pressure sensors, and temperature sensors. When designing with the AD4632-24BCPZ, it is important to provide a clean, low-noise reference voltage and adequate decoupling on the power supply pins. The integrated bypass capacitors help, but external decoupling is still recommended for optimal performance. Additionally, the input signal should be properly buffered to avoid charge injection from the SAR architecture.
AD4680BCPZ - 16-Bit 1MSPS Dual SAR ADC | Analog Devices
The AD4680BCPZ is a 16-bit, dual simultaneous sampling, successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It operates from a 3.0 V to 3.6 V power supply and features a throughput rate of 1 MSPS. The device accepts two differential input channels and is housed in a compact 16-lead LFCSP (3x3 mm) package, making it suitable for space-constrained industrial and instrumentation applications. What is a SAR ADC? A successive approximation register (SAR) ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input to a digital output. It compares the input voltage against a reference voltage using a capacitive digital-to-analog converter (DAC) and a comparator, iterating from the most significant bit (MSB) to the least significant bit (LSB). SAR ADCs are known for their high speed, low power, and excellent accuracy, making them ideal for applications such as data acquisition systems, motor control, and medical instrumentation. They are a subset of the broader ADC family, which also includes delta-sigma and pipeline converters. Key features of the AD4680BCPZ include dual simultaneous sampling, which allows two channels to be sampled at the same instant, preserving phase information between signals. The device also offers a high-speed serial interface (SPI) for easy connection to microcontrollers and DSPs. With a 16-bit resolution and 1 MSPS throughput, it provides high precision and fast conversion rates. The low power consumption, typically 15 mW at 1 MSPS, makes it suitable for battery-powered and portable equipment. The AD4680BCPZ uses a charge redistribution architecture with an internal reference buffer, ensuring accurate conversions over temperature. It includes a flexible power-down mode to reduce power consumption during idle periods. The device also features a temperature range of -40°C to +125°C, suitable for industrial environments. The LFCSP package offers excellent thermal performance and a small footprint, enabling high-density PCB layouts. Typical applications include motor control, where dual simultaneous sampling is essential for accurate current and voltage measurement, and data acquisition systems for industrial automation. The device is also used in medical devices, such as patient monitoring systems, where precision and low power are critical. Additionally, it is suitable for power monitoring and instrumentation. When designing with the AD4680BCPZ, ensure that the reference voltage is stable and well-decoupled. Use a low-noise reference, such as the ADR4520, to achieve optimal performance. The SPI interface should be isolated if the ADC is placed near noisy components. Proper PCB layout, including a solid ground plane and short traces, is essential to minimize noise and achieve the specified performance.
AD4681BCPZ - 16-Bit 500kSPS Dual SAR ADC | Analog Devices
The AD4681BCPZ is a 16-bit, dual simultaneous sampling, successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It operates from a 3.0 V to 3.6 V power supply and features a throughput rate of 500 kSPS. The device accepts two differential input channels and is available in a compact 3 mm × 3 mm, 16-lead LFCSP package, making it ideal for space-constrained industrial and instrumentation applications. A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input into a digital output. It offers a good balance of speed, resolution, and power consumption, making it suitable for applications such as motor control, data acquisition, and industrial automation. The AD4681 belongs to the ADC family, which is a subset of data converters, and ultimately falls under the broader category of mixed-signal integrated circuits. Key features of the AD4681 include dual simultaneous sampling, which allows both channels to be sampled at the same instant, preserving phase information between signals. The device also supports a separate logic supply, enabling direct interfacing with 1.8 V, 2.5 V, or 3.3 V digital systems. The conversion process uses standard control inputs, simplifying integration with microprocessors or DSPs. The AD4681 is specified for operation from −40°C to +125°C, ensuring reliable performance in harsh environments. Technically, the AD4681 uses a capacitive DAC architecture with a precision comparator, achieving high accuracy and low power consumption. The dual ADC cores operate simultaneously, each with its own track-and-hold circuit, ensuring synchronized sampling. The device includes an internal reference buffer and supports both SPI and daisy-chain modes for flexible data readout. The LFCSP package offers excellent thermal performance and a small footprint, reducing PCB area. Typical applications include motor control, where simultaneous current and voltage sensing is critical, and industrial data acquisition systems that require high-speed, high-resolution conversion. The AD4681 is also suitable for power monitoring, vibration analysis, and other precision measurement applications. Its low power consumption and wide temperature range make it a versatile choice for both portable and fixed installations. When designing with the AD4681, ensure that the analog input signals are properly conditioned with anti-aliasing filters and that the reference voltage is stable and low-noise. The separate logic supply should be decoupled with a 0.1 µF capacitor close to the pin. For optimal performance, use a clean analog ground plane and minimize digital switching noise near the ADC.
AD4682BCPZ - 16-Bit 1MSPS Dual SAR ADC | Analog Devices
The AD4682BCPZ is a 16-bit, dual, simultaneous sampling, successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It operates from a 3.0 V to 3.6 V power supply and features a pseudo differential input, achieving a maximum throughput of 1 MSPS. The device is housed in a compact 16-lead LFCSP (3x3 mm) package, making it suitable for space-constrained applications. An ADC (analog-to-digital converter) is a device that converts continuous analog signals into discrete digital values for processing by digital systems. SAR ADCs use a binary search algorithm to approximate the input voltage, offering a good balance of speed, resolution, and power consumption. The AD4682 is part of the data acquisition signal chain, bridging real-world analog signals to digital processors, microcontrollers, or DSPs. Key features include a buffered internal 2.5 V reference, with the option to use an external reference up to 3.3 V. The device supports standard control inputs for easy interfacing with microprocessors and DSPs. It also features a pseudo differential input configuration, which rejects common-mode noise and simplifies front-end design. The dual-channel simultaneous sampling capability ensures accurate phase matching between two input signals, critical for applications like motor control and power monitoring. Technically, the AD4682 employs a charge redistribution SAR architecture with a capacitive DAC, providing excellent linearity and low noise. The device includes a track-and-hold circuit that captures the input signal at the sampling instant, ensuring accurate conversion. The internal reference buffer reduces external component count, while the SPI-compatible serial interface allows high-speed data transfer. The device is specified for operation from -40°C to +125°C, making it suitable for industrial environments. Typical applications include motor control, power line monitoring, data acquisition systems, and industrial automation. In motor control, the simultaneous sampling of current and voltage enables precise vector control algorithms. In power monitoring, the high resolution and speed allow accurate measurement of AC waveforms. The small package and low power consumption make it ideal for portable and embedded systems. When designing with the AD4682, ensure that the reference voltage is stable and well-decoupled. Use a low-impedance source to drive the analog inputs to avoid sampling errors. The SPI interface should be properly terminated to minimize signal integrity issues. Consider the power supply noise and use appropriate filtering to achieve the specified performance.
AD4683BCPZ - 16-Bit 500kSPS Dual SAR ADC | Analog Devices
The AD4683BCPZ is a 16-bit, dual, simultaneous sampling, successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It operates from a 3.0 V to 3.6 V power supply and features a pseudo-differential input, achieving a throughput rate of 500 kSPS. The device is available in a compact 16-lead LFCSP (3x3 mm) package, making it suitable for space-constrained applications. A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input into a digital output. It is known for its high speed, low power consumption, and excellent accuracy, making it ideal for applications such as data acquisition systems, industrial process control, and medical instrumentation. The AD4683 is part of a pin-compatible family that includes the AD4682, which offers a higher throughput of 1 MSPS, allowing designers to scale performance without changing the PCB layout. Key features of the AD4683 include dual simultaneous sampling, which ensures that both input channels are captured at the same instant, critical for applications like motor control and power monitoring. The device also offers a pseudo-differential input configuration, which provides common-mode rejection and reduces noise. With a 16-bit resolution, it delivers high precision, and its low power consumption makes it suitable for battery-powered devices. The AD4683 uses a SAR architecture with an internal reference and a serial interface (SPI) for data output. It includes a conversion clock and supports daisy-chaining for multiple devices. The device operates over a temperature range of -40°C to +125°C, ensuring reliability in harsh environments. Its small LFCSP package and low power dissipation make it an excellent choice for portable and embedded systems. Typical applications include industrial automation, data acquisition systems, motor control, and medical devices. The dual simultaneous sampling capability is particularly beneficial for applications requiring precise phase alignment between two signals, such as power quality analysis and vibration monitoring. When designing with the AD4683, ensure that the analog input signals are within the specified common-mode range and that the reference voltage is stable. Proper decoupling of the power supply and careful PCB layout are essential to achieve the specified performance.
AD4690BCPZ - 16-Bit, 16-Channel, 1 MSPS SAR ADC | Analog Devices
The AD4690BCPZ is a 16-bit, 16-channel, successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices, featuring Easy Drive technology that simplifies front-end design by reducing input drive requirements. It operates at throughput rates up to 1 MSPS and is available in a compact 32-lead LFCSP-WQ (5x5 mm) package. The device supports a wide analog input range and includes a high-Z input mode that eliminates the need for external driver amplifiers in many applications. A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input into a digital output. It is known for its high speed, low power consumption, and excellent accuracy, making it ideal for applications such as industrial process control, data acquisition systems, and medical instrumentation. The AD4690BCPZ belongs to the family of precision SAR ADCs, which are essential building blocks in mixed-signal systems where accurate conversion of real-world signals is critical. Key features of the AD4690BCPZ include 16-bit resolution, 16 single-ended or 8 differential input channels, a maximum sampling rate of 1 MSPS, and an SPI-compatible serial interface. The device also offers a flexible power supply range, low power dissipation, and a built-in reference buffer. The Easy Drive technology reduces the input current and settling time, allowing direct connection to high-impedance sources without external buffers. The AD4690BCPZ uses a charge redistribution SAR architecture with a capacitive DAC, providing excellent linearity and low noise. The device includes a track-and-hold circuit that captures the analog input at the start of each conversion, ensuring accurate sampling. The high-Z input mode further enhances performance by reducing the input current to near zero, which is particularly beneficial when driving the ADC from high-impedance sensors. Typical applications for the AD4690BCPZ include industrial automation, motor control, power monitoring, and portable instrumentation. Its high channel count and fast sampling rate make it suitable for multi-channel data acquisition systems, while its low power consumption extends battery life in portable devices. The device is also well-suited for applications requiring high accuracy over a wide temperature range. When designing with the AD4690BCPZ, it is important to provide a clean, low-impedance reference voltage and adequate decoupling on the power supply pins. The SPI interface should be configured for the desired sampling rate, and the input signal should be properly conditioned to avoid aliasing. The high-Z input mode can be enabled to simplify the front-end design, but the trade-off in settling time should be considered for high-speed applications.
AD4691BCPZ - 16-Channel 16-Bit SAR ADC | Analog Devices
The AD4691BCPZ is a 16-bit, 16-channel, multiplexed successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices, featuring Easy Drive technology. It operates at a throughput of 500 kSPS and is housed in a 32-lead LFCSP (5x5 mm) package. The device integrates precharge buffers that significantly reduce input voltage and current transients, enabling the use of smaller, lower-power analog front-end (AFE) designs without high-bandwidth ADC driver amplifiers per channel. An ADC (analog-to-digital converter) is a device that converts continuous analog signals into discrete digital numbers. The AD4691 is a SAR ADC, which uses a successive approximation register algorithm to perform conversions with high speed and accuracy. SAR ADCs are widely used in data acquisition systems, industrial process control, and medical instrumentation due to their excellent balance of speed, resolution, and power consumption. The AD4691 belongs to the family of multiplexed SAR ADCs, which allow multiple input channels to share a single conversion core, reducing cost and board space. Key features of the AD4691BCPZ include 16 single-ended or 8 differential input channels, a 16-bit resolution with no missing codes, and a maximum sample rate of 500 kSPS. The Easy Drive technology reduces input current and voltage transients, simplifying the external driver requirements. The device also includes per-channel averaging filters, which can improve noise performance and reduce the digital filter burden on the host processor. The LFCSP package offers a compact footprint suitable for space-constrained designs. Technically, the AD4691 uses a charge redistribution SAR architecture with an internal reference buffer. The precharge buffers are the key innovation, as they isolate the input from the sampling capacitor, allowing the use of lower-bandwidth amplifiers and reducing power consumption. The device supports both SPI and QSPI interfaces for communication with microcontrollers and DSPs. The per-channel averaging filters can be configured to average up to 128 samples, providing trade-offs between noise reduction and throughput. Typical applications include industrial process control, data acquisition systems, battery-powered instrumentation, and medical monitoring equipment. The AD4691 is particularly suited for multi-channel sensor monitoring where low power and small size are critical. Its Easy Drive feature makes it ideal for direct connection to sensors without complex front-end circuitry. When designing with the AD4691, ensure that the reference voltage is stable and well-decoupled. The input signal range should be within the specified common-mode range to avoid distortion. The SPI interface should be configured for the correct clock polarity and phase as per the datasheet.
AD4692BCPZ - 16-Channel 16-Bit SAR ADC | Analog Devices
The AD4692BCPZ is a 16-channel, 16-bit successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices, featuring Easy Drive technology and per-channel averaging filters. It operates at a maximum sample rate of 1 MSPS and is housed in a 32-lead LFCSP (5x5 mm) package. The device is recommended for new designs and is available from major distributors. An ADC is a device that converts an analog voltage into a digital representation. The AD4692 is a multiplexed SAR ADC, meaning it uses a single conversion engine shared across multiple input channels via an internal multiplexer. SAR ADCs are known for their high speed, low power, and excellent accuracy, making them suitable for a wide range of data acquisition systems. The AD4692 belongs to the family of data converters, which are essential in bridging the analog and digital worlds in applications such as industrial automation, medical instrumentation, and test equipment. Key features of the AD4692BCPZ include 16 input channels, 16-bit resolution, and a 1 MSPS throughput. The Easy Drive technology reduces input current and voltage transients, allowing the use of smaller, lower-power amplifiers and references. Each channel has an averaging filter that can be configured to improve noise performance. The device operates from a single 5V supply and supports a wide analog input range, simplifying system design. Technically, the AD4692 uses a charge redistribution SAR architecture with an internal reference buffer. The Easy Drive feature employs precharge buffers that significantly reduce the kickback charge, enabling direct connection to high-impedance sources without external drivers. The averaging filters can be programmed to average up to 128 samples, effectively increasing the resolution for low-frequency signals. The device also includes a flexible digital interface compatible with SPI, and supports daisy-chaining for multiple devices. Typical applications include industrial process control, battery monitoring, data acquisition systems, and medical devices. The 16-channel input capability makes it ideal for monitoring multiple sensors, while the high accuracy and low noise ensure reliable measurements. The Easy Drive feature simplifies the analog front-end, reducing component count and board space. When designing with the AD4692BCPZ, ensure proper decoupling of the AVDD and DVDD supplies with 10uF and 0.1uF capacitors. The reference input should be driven by a low-impedance source, and the analog inputs should be bypassed to ground to minimize noise. The device supports a power-down mode to reduce current consumption when not converting.
AD4693BCPZ - 16-Bit 500kSPS 8-Ch SAR ADC | Analog Devices
The AD4693BCPZ is a 16-bit, 8-channel, successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices, featuring Easy Drive technology and per-channel averaging filters. It operates at a maximum sample rate of 500 kSPS and is housed in a compact 24-lead LFCSP (4x4 mm) package. The device is designed for multiplexed data acquisition systems where input drive complexity and power consumption are critical. A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input to a digital output. It is known for its high speed, low power, and excellent accuracy, making it ideal for industrial, instrumentation, and medical applications. The AD4693 belongs to the family of Easy Drive multiplexed SAR ADCs, which integrate precharge buffers to reduce input transients, allowing the use of smaller and lower-power analog front-end (AFE) components. Key features of the AD4693BCPZ include 16-bit resolution, 8 input channels, a maximum throughput of 500 kSPS, and an SPI-compatible serial interface. The Easy Drive technology significantly reduces input current and voltage transients, enabling direct connection to sensors without high-bandwidth driver amplifiers. The device also includes per-channel averaging filters that can improve effective resolution and reduce noise. The AD4693 uses a charge redistribution SAR architecture with an internal reference buffer, providing high linearity and low noise. The precharge buffers on each input channel eliminate the need for external RC filters in many applications, simplifying the AFE design. The device operates from a single 2.3V to 5.5V supply, making it suitable for battery-powered and low-voltage systems. Typical applications include industrial process control, data acquisition systems, medical instrumentation, and battery monitoring. The AD4693's low power consumption and small package make it ideal for space-constrained designs. Its Easy Drive feature allows direct connection to high-impedance sources, reducing component count and board space. When designing with the AD4693BCPZ, ensure proper decoupling of the supply pins and a clean reference voltage. The SPI interface should be isolated from noisy digital lines to maintain SNR. The device supports both single-ended and differential input configurations, providing flexibility in sensor interfacing.
AD4694BCPZ - 16-Bit 8-Ch SAR ADC | Analog Devices
The AD4694BCPZ is a 16-bit, 8-channel, Easy Drive multiplexed successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It features a maximum sample rate of 1 MSPS and is housed in a 24-lead LFCSP (4x4 mm) package. The device integrates per-channel averaging filters, reducing the digital filter burden on the host processor. With its Easy Drive architecture, the AD4694 simplifies analog front-end design by eliminating the need for external high-bandwidth drivers, making it ideal for high-impedance sensor interfaces. An ADC (analog-to-digital converter) is a device that converts continuous analog signals into discrete digital codes. The SAR ADC is a common type that uses a binary search algorithm to approximate the input voltage, offering a good balance of speed, resolution, and power consumption. The AD4694 belongs to the data acquisition subsystem, converting real-world signals into digital data for processing by microcontrollers, DSPs, or FPGAs. Key features include 16-bit resolution, 8 multiplexed input channels, 1 MSPS throughput, and an Easy Drive input stage that allows direct connection to high-impedance sources without external buffers. The per-channel averaging filters improve noise performance and reduce host processing overhead. The device operates from a single 2.3V to 5.5V supply, with a separate digital interface supply for flexible logic levels. The AD4694 uses a charge-redistribution SAR architecture with an internal reference buffer, achieving excellent linearity and low power consumption. The Easy Drive feature reduces input current spikes, enabling direct sensor connection. The device includes a flexible serial interface (SPI) that supports daisy-chaining and multiple devices on a single bus. Typical applications include industrial process control, battery monitoring, medical instrumentation, and data acquisition systems. The high input impedance and per-channel filtering make it suitable for direct connection to sensors such as thermocouples, RTDs, and strain gauges. When designing with the AD4694, ensure proper decoupling of the AVDD and DVDD supplies, and place the reference decoupling capacitor close to the REF pin. The Easy Drive input stage allows high source impedance, but the acquisition time must be considered at maximum sample rates.
AD4695BCPZ - 16-Bit 16-Ch 500kSPS SAR ADC | Analog Devices
The AD4695BCPZ is a 16-bit, 16-channel, 500 kSPS successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It features Easy Drive technology that enables high-impedance analog inputs and reference inputs, simplifying system design by eliminating the need for dedicated high-speed ADC drivers and reference buffers. The device operates from a single 1.8V supply and communicates via a serial interface, packaged in a 32-lead LFCSP-WQ (5x5 mm). An ADC (analog-to-digital converter) is an electronic component that converts continuous analog signals into discrete digital values for processing by digital systems. The AD4695BCPZ belongs to the SAR ADC family, which uses a successive approximation register algorithm to achieve high-speed, high-resolution conversion with low power consumption. SAR ADCs are widely used in data acquisition systems, industrial automation, and medical instrumentation where accuracy and speed are critical. Key features of the AD4695BCPZ include 16-bit resolution, 16 multiplexed input channels, and a maximum sampling rate of 500 kSPS. The Easy Drive architecture allows direct connection to high-impedance sensors without external buffers, reducing component count and board space. The device also offers a high-Z mode for both analog inputs and reference inputs, further simplifying system design. The LFCSP package provides excellent thermal performance and a compact footprint for space-constrained applications. Technically, the AD4695BCPZ integrates a capacitive DAC and comparator, achieving excellent linearity and low noise. The serial interface supports multiple devices on a single bus, enabling scalable multi-channel acquisition systems. The device includes an internal reference buffer (in the WLCSP option) and supports external references for flexibility. The ADC operates over a wide temperature range, making it suitable for industrial environments. Typical applications include industrial process control, battery-powered instrumentation, medical monitoring, and data acquisition systems. The high input impedance and Easy Drive features make it ideal for directly interfacing with sensors such as thermocouples, strain gauges, and pressure transducers. The 16-channel multiplexer allows monitoring multiple signals with a single ADC, reducing system cost. When designing with the AD4695BCPZ, ensure proper decoupling of the supply and reference pins with low-ESR capacitors. The serial interface should be isolated from noisy digital lines to maintain conversion accuracy. The device's high-Z mode reduces input current, but the source impedance should still be considered to avoid settling time errors.
AD4696BCPZ - 16-Bit 16-Channel SAR ADC | Analog Devices
The AD4696BCPZ from Analog Devices is a 16-bit, 16-channel, 1 MSPS successive approximation register (SAR) analog-to-digital converter (ADC) featuring a multiplexed front end with Easy Drive technology. Housed in a 32-lead LFCSP-WQ (5x5 mm) package, this device simplifies signal conditioning by eliminating the need for external drivers in many applications. It operates from a single 2.5V to 5.5V analog supply and a 1.8V to 5.5V digital interface supply, making it versatile for various system power rails. A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input into a digital output. It is known for its high speed, low power, and excellent accuracy, making it ideal for applications such as industrial process control, data acquisition systems, and medical instrumentation. The AD4696 belongs to the family of SAR ADCs, which are a subset of data converters, which in turn are part of the broader category of mixed-signal integrated circuits. Key features of the AD4696BCPZ include 16 single-ended or 8 differential input channels, a maximum sampling rate of 1 MSPS, and an SPI-compatible serial interface. The device offers a signal-to-noise ratio (SNR) of 95.5 dB and a total harmonic distortion (THD) of -110 dB, ensuring high-fidelity conversion. It also includes an on-chip 2.5V reference buffer, a temperature sensor, and a customizable channel sequencer, reducing the burden on the host processor. The AD4696 uses a charge redistribution architecture with a capacitive DAC, achieving excellent linearity and low power consumption. The Easy Drive feature reduces the input current requirement, allowing direct connection to high-impedance sources without external buffers. The device also supports oversampling and decimation to improve noise performance at lower effective sampling rates. Typical applications include industrial automation, battery-powered instrumentation, and medical monitoring systems. Its high channel count and Easy Drive capability make it particularly suitable for multi-channel data acquisition where PCB area and power are constrained. When designing with the AD4696BCPZ, ensure proper decoupling of the analog and digital supplies and place the reference decoupling capacitor close to the REF pin. The SPI interface should be isolated from noisy digital traces to maintain conversion accuracy.
AD4697BCPZ - 16-Bit 8-Ch SAR ADC | Analog Devices
The AD4697BCPZ is a 16-bit, 8-channel, 500 kSPS/1 MSPS Easy Drive multiplexed successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices Inc., packaged in a compact 24-lead LFCSP (4x4 mm). It converts up to eight multiplexed analog inputs with true 16-bit precision, making it an efficient building block for multichannel data acquisition systems where board space and front-end simplicity are important. What is a SAR ADC? A successive approximation register ADC is a type of analog-to-digital converter that uses a binary-search algorithm to determine the digital code closest to the analog input voltage. SAR converters are well known for their low power, moderate-to-high resolution, and fast conversion times compared to delta-sigma converters. In the hierarchy of signal chains, a SAR ADC follows the analog front-end (sensors, amplifiers, filters) and precedes the digital processor; its output feeds microcontrollers, DSPs, or FPGAs. The AD4697 fits this role as a precision measurement core, converting multiplexed analog signals into clean digital words. Key features of the AD4697BCPZ include the Easy Drive input architecture, which provides a high-Z analog input mode and a high-Z reference input mode. According to the Analog Devices product page, this simplifies system design by removing the need for dedicated high-speed ADC drivers and reference buffers, reducing component count and increasing channel density. The WLCSP option of the AD4697/AD4698 family includes an internal reference buffer for a true buffered reference input. The LFCSP-24 package measures only 4 mm x 4 mm and is surface-mount compatible. Architecturally, the AD4697 uses a multiplexed SAR core that sequentially samples each of the eight inputs. The high-Z input mode enables direct connection to many sensor types, while the high-Z reference input supports a precision external reference without extra buffering. Distributor listings from DigiKey and Mouser confirm 16-bit resolution, 8 input channels, SAR architecture, and 500 kSPS throughput; the family is also described as a 500 kSPS/1 MSPS device in datasheet aggregator listings. Typical applications include industrial process control with multiple 4-20 mA or voltage sensors, battery management system monitoring for cell voltages and temperatures, medical instrumentation such as patient monitors, power line monitoring, and general test and measurement data acquisition modules. The small package and high channel count make the AD4697 well suited to dense PCBs. When designing with this ADC, pay attention to input settling: after the multiplexer switches channels, allow sufficient acquisition time for the sampling capacitor to settle. Decouple the supply pins with 0.1 uF and 10 uF capacitors, connect the exposed pad to ground, and use a stable external reference such as the REF192ESZ for best accuracy.
AD4698BCPZ - 16-Bit 1 MSPS 8-Ch SAR ADC | Analog Devices
The AD4698BCPZ from Analog Devices is a compact, high accuracy, low power, 8-channel, 16-bit, 1 MSPS multiplexed input precision successive approximation register (SAR) analog-to-digital converter (ADC) with Easy Drive features and extensive digital functions. It is available in a 24-lead LFCSP (4x4 mm) package, making it suitable for space-constrained industrial and instrumentation applications. A SAR ADC is a type of analog-to-digital converter that uses a successive approximation register to convert an analog input signal into a digital output. It operates by comparing the input voltage against a series of binary-weighted reference voltages, refining the approximation until the digital output matches the input within the converter's resolution. SAR ADCs are known for their high speed, low power consumption, and ease of use, making them a popular choice in data acquisition systems, industrial process control, and medical instrumentation. Key features of the AD4698BCPZ include 16-bit resolution, 8 input channels, a maximum sampling rate of 1 MSPS, and an SPI interface. The device operates with an analog supply voltage of 3.15 V to 5.5 V, and features Easy Drive technology that simplifies the analog front-end design by reducing input drive requirements. The ADC also includes a high-speed serial interface, a reference input, and a temperature sensor, enabling comprehensive system monitoring. The AD4698BCPZ is designed for high accuracy and low power, with a typical power consumption of [DATA_NEEDED: power consumption] mW at 1 MSPS. The device includes a 16-bit SAR core, an internal reference buffer, and a flexible digital interface that supports multiple operating modes. The Easy Drive feature reduces the input current and charge kickback, allowing direct connection to sensors without external buffers, which simplifies the design and reduces component count. Typical applications include industrial process control, data acquisition systems, medical instrumentation, and battery-powered devices. The AD4698BCPZ is also suitable for multi-channel monitoring systems where high accuracy and low power are critical. Its small package and low power consumption make it ideal for portable and space-constrained designs. When designing with the AD4698BCPZ, ensure that the analog input signal is within the specified input range and that the reference voltage is stable. The SPI interface should be configured for the desired sampling rate and data format. Proper decoupling of the power supply and reference pins is essential for achieving the specified performance.
AD4851BCPZ - 16-Bit 4-Ch Simultaneous Sampling DAS | Analog Devices
The AD4851BCPZ is a fully buffered, 4-channel simultaneous sampling, 16-bit, 250kSPS data acquisition system (DAS) from Analog Devices. It integrates four internal buffer amplifiers, a 16-bit SAR ADC, an internal 4.096V reference and reference buffer, and supply decoupling capacitors, all in a compact 64-ball BGA (7x7 mm) package. Operating from a single 5V supply, it delivers 36mW per channel at 250kSPS, scaling with throughput. The device features differential, wide common-mode range inputs with ±75pA typical input leakage at 25°C and full-scale input step settling time of less than 300ns. A data acquisition system (DAS) is a complete signal chain that conditions, samples, and converts analog signals to digital words. The AD4851 integrates the input buffer, ADC, and reference, reducing external component count and simplifying design. It sits within the hierarchy: DAS -> ADC -> data converter -> mixed-signal IC -> semiconductor. This integration is critical for multi-channel systems where board space and channel-to-channel matching are paramount. Key features include simultaneous sampling of four channels, ensuring phase-accurate capture of multi-phase signals, and a wide common-mode input range that accommodates various sensor outputs without external level shifting. The integrated reference and buffer eliminate the need for external reference circuitry, while internal supply decoupling capacitors reduce external bypass requirements. The device operates over the industrial temperature range and is recommended for new designs. Architecturally, the AD4851 uses a successive approximation register (SAR) architecture, offering a balance of speed, resolution, and power. The internal buffers present a high-impedance input to the sensor, minimizing loading and preserving signal integrity. The wide common-mode range allows direct connection to differential signals with large offsets, simplifying front-end design. The 250kSPS per channel throughput supports high-speed industrial and instrumentation applications. Typical applications include motor control (phase current and voltage sensing), power monitoring, vibration analysis, and multi-phase power quality measurement. The simultaneous sampling capability is essential for accurate power calculations in three-phase systems. The device's low power and small footprint make it suitable for portable and space-constrained designs. When designing with the AD4851, ensure adequate decoupling on the supply pins and a clean reference voltage. The internal reference is 4.096V, but an external reference can be used if higher accuracy is required. The SPI interface simplifies connection to microcontrollers and DSPs. Careful PCB layout, with short analog input traces and a solid ground plane, is essential to achieve the specified performance.