AD4170BCPZ - 24-Bit Sigma-Delta ADC, 500kSPS | Analog Devices
MPN: AD4170BCPZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $10 | $1,000.00 |
| 500 | $9 | $4,500.00 |
| 1,000 | $8.1 | $8,100.00 |
Drop-in alternatives for AD4170BCPZ β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
AD4170-4BCPZ
β Drop-Inπ Reference alternative (not in catalog)
AD4170-4BCPZ-RL7
β Drop-Inπ Reference alternative (not in catalog)
AD7175-8BCPZ-RL7
β Drop-Inβ In Stock
$19.5682 / Unit
View Datasheet βAD7172-2BRUZ-RL7
β Drop-Inβ In Stock
$10.6591 / Unit
View Datasheet βAD7384-4BCPZ
β Drop-Inβ In Stock
$11.05 / Unit
View Datasheet βAD4170BCPZ Maximum Ratings & Electrical Characteristics
| Resolution | 24 Bit |
| Number of Inputs | 8 |
| Input Type | Differential/Single-Ended |
| Data Interface | SPI |
| Sampling Rate | 500 kSPS |
| Input Bandwidth | DC to 50 kHz |
| Output Data Rate | 7.6 SPS to 500 kSPS |
| Architecture | Sigma-Delta |
| Number of Converters | 1 |
| Analog Supply Voltage | 2.5V to 5.5V |
| Digital Supply Voltage | 1.8V to 5.5V |
| Package | 32-LFCSP (4x6) |
| Mounting Type | Surface Mount |
| Operating Temperature | [DATA_NEEDED: operating temperature range] |
| RoHS Status | Compliant |
AD4170BCPZ Pin Configuration
| Pin 1 | AVDD β Analog power supply |
| Pin 2 | AVSS β Analog ground |
| Pin 3 | REF+ β Positive reference input |
| Pin 4 | REF- β Negative reference input |
| Pin 5 | AIN0 β Analog input 0 |
| Pin 6 | AIN1 β Analog input 1 |
| Pin 7 | AIN2 β Analog input 2 |
| Pin 8 | AIN3 β Analog input 3 |
| Pin 9 | AIN4 β Analog input 4 |
| Pin 10 | AIN5 β Analog input 5 |
| Pin 11 | AIN6 β Analog input 6 |
| Pin 12 | AIN7 β Analog input 7 |
| Pin 13 | DVDD β Digital power supply |
| Pin 14 | DVSS β Digital ground |
| Pin 15 | SCLK β Serial clock input |
| Pin 16 | DIN β Serial data input |
| Pin 17 | DOUT β Serial data output |
| Pin 18 | CS β Chip select |
| Pin 19 | SYNC β Synchronization input |
| Pin 20 | RESET β Reset input |
| Pin 21 | GPIO0 β General purpose I/O |
| Pin 22 | GPIO1 β General purpose I/O |
| Pin 23 | GPIO2 β General purpose I/O |
| Pin 24 | GPIO3 β General purpose I/O |
| Pin 25 | TEMP β Temperature sensor output |
| Pin 26 | VREF β Voltage reference output |
| Pin 27 | CAP β Capacitor connection |
| Pin 28 | NC β No connect |
| Pin 29 | NC β No connect |
| Pin 30 | NC β No connect |
| Pin 31 | NC β No connect |
| Pin 32 | EP β Exposed pad |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
AD4170BCPZ is suitable for 6 applications: Precision Weigh Scales, Industrial Process Control, Medical Instrumentation, Vibration Analysis, Temperature Sensing, Data Acquisition Systems.
Precision Weigh Scales
The AD4170BCPZ's 24-bit resolution and low noise make it ideal for precision weigh scales. Its high output data rate of up to 500 kSPS allows fast settling times, while the integrated PGA with gains up to 128 amplifies small load cell signals. The sigma-delta architecture provides excellent linearity, ensuring accurate weight measurements. The device's SPI interface simplifies connection to microcontrollers, and its compact LFCSP package saves board space. With proper filtering, the ADC can achieve high accuracy in industrial weighing applications.
Recommended
Industrial Process Control
In industrial process control, the AD4170BCPZ provides accurate measurement of temperature, pressure, and flow. Its wide input bandwidth and high resolution enable precise monitoring of process variables. The device's flexible digital filter allows trade-offs between speed and noise, adapting to different control loop requirements. The integrated temperature sensor aids in cold-junction compensation for thermocouples. The SPI interface and wide supply voltage range ensure compatibility with industrial microcontrollers. The AD4170BCPZ's robust design and low power consumption make it suitable for 24/7 operation in harsh environments.
Recommended
Medical Instrumentation
The AD4170BCPZ is well-suited for medical instrumentation such as patient monitoring and diagnostic equipment. Its low noise and high resolution ensure accurate measurement of physiological signals like ECG and EEG. The device's high input impedance and programmable gain accommodate various sensor types. The compact LFCSP package is ideal for portable medical devices. The SPI interface allows easy integration with medical-grade microcontrollers. The AD4170BCPZ's low power consumption extends battery life in wearable monitors. Its wide operating temperature range supports reliable operation in clinical environments.
Recommended
Vibration Analysis
The AD4170BCPZ's high output data rate of 500 kSPS makes it ideal for vibration analysis and condition monitoring. Its low noise floor allows detection of small vibration amplitudes. The device's sigma-delta architecture provides high dynamic range, capturing both low and high frequency components. The integrated PGA can amplify accelerometer signals for better resolution. The SPI interface enables high-speed data transfer to DSPs or FPGAs for real-time analysis. The compact package is suitable for embedded vibration sensors. The AD4170BCPZ's performance meets the requirements of predictive maintenance systems.
Recommended
Temperature Sensing
The AD4170BCPZ is excellent for temperature sensing with thermocouples, RTDs, and thermistors. Its high resolution and low noise enable accurate temperature measurements over a wide range. The integrated PGA with gains up to 128 amplifies small sensor signals, improving resolution. The device includes a temperature sensor for cold-junction compensation in thermocouple applications. The flexible digital filter allows rejection of 50/60 Hz noise. The SPI interface simplifies connection to temperature controllers. The AD4170BCPZ's wide supply voltage range supports various system designs.
Recommended
Data Acquisition Systems
The AD4170BCPZ is a versatile choice for general-purpose data acquisition systems. Its high speed and resolution make it suitable for capturing a wide range of signals. The device's 8 input channels can be configured as differential or single-ended, providing flexibility. The SPI interface supports high-speed data transfer to microcontrollers or FPGAs. The integrated PGA and reference reduce external components, simplifying design. The compact LFCSP package is ideal for multi-channel DAQ boards. The AD4170BCPZ's low power consumption is beneficial for portable data loggers.
Recommended
Recommended Products Summary
Engineering reference data for AD4170BCPZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD4170-4BCPZ | AD4170-4BCPZ-RL7 | AD7175-8BCPZ-RL7 | AD7172-2BRUZ-RL7 | AD7384-4BCPZ |
|---|---|---|---|---|---|---|
| Package | 32-LFCSP (4x6) | 32-LFCSP (4x6) | 32-LFCSP (4x6) | 32-LFCSP (4x6) | 32-LFCSP (4x6) | 32-LFCSP (4x6) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 24 Bit | 24 Bit | 24 Bit | 24 Bit | 24 Bit | 16 Bit |
| Sampling Rate | 500 kSPS | 500 kSPS | 500 kSPS | 250 kSPS | 31.25 kSPS | 4 MSPS |
| Number of Inputs | 8 | 8 | 8 | 8 | 2 | 4 |
| Input Type | Differential/Single-Ended | Differential/Single-Ended | Differential/Single-Ended | Differential/Single-Ended | Differential/Single-Ended | Differential |
| Architecture | Sigma-Delta | Sigma-Delta | Sigma-Delta | Sigma-Delta | Sigma-Delta | SAR |
| Analog Supply Voltage | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 3.0V to 3.6V |
Key Differentiators
- Higher sampling rate than AD7172-2BRUZ-RL7 (vs AD7172-2BRUZ-RL7)
- More input channels than AD7384-4BCPZ (vs AD7384-4BCPZ)
- Higher resolution than AD7384-4BCPZ (vs AD7384-4BCPZ)
Design Notes
Decouple the AVDD and DVDD pins with 10uF and 0.1uF capacitors placed as close to the pins as possible. Use separate analog and digital ground planes to minimize noise coupling. The AD4170BCPZ operates from 2.5V to 5.5V analog supply and 1.8V to 5.5V digital supply, so ensure proper voltage levels for your system.
For optimal performance, route the analog inputs away from digital traces and the SPI interface. Use a solid ground plane under the ADC and avoid cutting it with vias. The reference input should be bypassed with a low-ESR capacitor, such as a 10uF ceramic, to maintain stability and reduce noise.
Do not exceed the absolute maximum ratings for supply voltages. Ensure the reference voltage is stable and within the specified range. The SPI interface should be isolated from noisy digital traces to preserve the ADC's noise performance. Also, configure the digital filter appropriately to reject 50/60 Hz noise for industrial applications.
Compliance Information
RoHS compliant per distributor listings. Other compliance data not specified in provided data.
