AD7385BCPZ - 16-Bit Quad SAR ADC | Analog Devices
MPN: AD7385BCPZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $9.8 | $980.00 |
| 500 | $8.75 | $4,375.00 |
| 1,000 | $7.9 | $7,900.00 |
Drop-in alternatives for AD7385BCPZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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AD7386-4BCPZ
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View Datasheet →AD7385BCPZ Maximum Ratings & Electrical Characteristics
| Resolution | 16-bit |
| Number of Channels | 4 (simultaneous sampling) |
| Sampling Rate | 2 MSPS |
| Input Type | Single-ended |
| Interface | SPI |
| Supply Voltage | 3.0 V to 3.3 V |
| Reference Type | External, Built-in |
| SNR | 86.7 dB |
| THD | -100 dB |
| Power Consumption | 200 µA (standby) |
| Operating Temperature Range | -40°C to +125°C |
| Package | 24-LFCSP (4x4 mm) |
| Mounting Type | Surface Mount |
| RoHS | Compliant |
| Features | FIFO buffer, soft reset, power-on reset, simultaneous sampling |
AD7385BCPZ Pin Configuration
| Pin 1 | VDD — Power supply (3.0V to 3.3V) |
| Pin 2 | VIN1 — Analog input channel 1 |
| Pin 3 | VIN2 — Analog input channel 2 |
| Pin 4 | VIN3 — Analog input channel 3 |
| Pin 5 | VIN4 — Analog input channel 4 |
| Pin 6 | GND — Ground |
| Pin 7 | REF — Reference input/output |
| Pin 8 | SCLK — Serial clock input |
| Pin 9 | SDI — Serial data input |
| Pin 10 | SDO — Serial data output |
| Pin 11 | CS — Chip select (active low) |
| Pin 12 | RESET — Reset input |
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
AD7385BCPZ is suitable for 6 applications: Motor Control, Power Monitoring, Data Acquisition Systems, Industrial Automation, Automotive Electronics, Medical Instrumentation.
Motor Control
The AD7385BCPZ is ideal for motor control applications due to its four simultaneous sampling channels and 2 MSPS sampling rate. It enables accurate measurement of phase currents and voltages, which is critical for field-oriented control (FOC) algorithms. The high SNR of 86.7 dB ensures precise current sensing, improving torque control and efficiency. The device's SPI interface allows easy integration with microcontrollers and DSPs. Its wide operating temperature range (-40°C to +125°C) makes it suitable for industrial motor drives. The compact LFCSP package saves PCB space, and the low power consumption (200 µA standby) is beneficial for energy-efficient designs.
Recommended
Power Monitoring
The AD7385BCPZ is well-suited for power monitoring applications, such as smart meters and power quality analyzers. Its 16-bit resolution and 2 MSPS sampling rate allow accurate measurement of AC and DC power parameters, including voltage, current, and power factor. The simultaneous sampling capability ensures that voltage and current waveforms are captured with precise phase alignment, which is essential for accurate power calculations. The device's high SNR (86.7 dB) and low THD (-100 dB) contribute to reliable measurements. The SPI interface simplifies data transfer to a host processor, and the built-in reference reduces external component count. The wide temperature range supports outdoor and industrial installations.
Recommended
Data Acquisition Systems
The AD7385BCPZ is an excellent choice for general-purpose data acquisition systems (DAQ) that require high-speed, multi-channel analog input. Its four simultaneously sampled channels allow synchronized capture of multiple signals, which is useful for vibration analysis, structural health monitoring, and test and measurement equipment. The 16-bit resolution provides fine granularity, and the 2 MSPS sampling rate captures fast transients. The device's SPI interface supports daisy-chaining, enabling expansion to more channels with minimal wiring. The built-in FIFO buffer helps manage data flow, reducing processor overhead. The compact package and low power consumption make it suitable for portable and embedded DAQ systems.
Recommended
Industrial Automation
In industrial automation, the AD7385BCPZ can be used in programmable logic controllers (PLCs) and process control systems to monitor analog sensors such as temperature, pressure, and flow. Its 16-bit resolution ensures precise measurement, and the 2 MSPS sampling rate allows fast response to process changes. The simultaneous sampling feature is beneficial for applications that require correlation between multiple sensor inputs. The device's wide operating temperature range and robust design make it suitable for harsh industrial environments. The SPI interface simplifies integration with industrial microcontrollers, and the low power consumption helps reduce heat generation in control cabinets.
Recommended
Automotive Electronics
The AD7385BCPZ is suitable for automotive applications such as battery management systems (BMS) and motor drives in electric vehicles. Its 16-bit resolution and 2 MSPS sampling rate enable accurate monitoring of battery voltage and current, which is critical for state-of-charge estimation. The simultaneous sampling capability ensures that voltage and current are measured at the same instant, improving power calculation accuracy. The device's wide temperature range (-40°C to +125°C) meets automotive requirements, and the compact LFCSP package is ideal for space-constrained electronic control units (ECUs). The SPI interface allows easy communication with automotive microcontrollers.
Recommended
Medical Instrumentation
The AD7385BCPZ can be used in medical instrumentation such as patient monitoring systems and diagnostic equipment. Its high resolution (16-bit) and low noise (SNR 86.7 dB) are essential for accurate measurement of physiological signals like ECG and EEG. The simultaneous sampling capability is useful for multi-lead ECG systems where timing alignment is critical. The device's low power consumption is beneficial for battery-powered portable medical devices. The compact package allows for miniaturization of medical devices. The SPI interface simplifies integration with medical-grade microcontrollers, and the wide temperature range ensures reliable operation in clinical environments.
Recommended
Recommended Products Summary
Engineering reference data for AD7385BCPZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7386-4BCPZ | AD7383-4BCPZ | AD7384-4BCPZ |
|---|---|---|---|---|
| Package | 24-LFCSP (4x4 mm) | 24-LFCSP (4x4 mm) | 24-LFCSP (4x4 mm) | 24-LFCSP (4x4 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16-bit | 16-bit | 14-bit | 12-bit |
| Sampling Rate | 2 MSPS | 2 MSPS | 2 MSPS | 2 MSPS |
| Number of Channels | 4 | 4 | 4 | 4 |
| Input Type | Single-ended | Single-ended | Single-ended | Single-ended |
| SNR | 86.7 dB | 86.7 dB | 86.7 dB | 86.7 dB |
| Supply Voltage | 3.0V to 3.3V | 3.0V to 3.3V | 3.0V to 3.3V | 3.0V to 3.3V |
Key Differentiators
- Simultaneous sampling of four channels (vs AD7386-4BCPZ)
- 16-bit resolution with high SNR (vs AD7383-4BCPZ)
- Built-in FIFO buffer (vs AD7384-4BCPZ)
Design Notes
Provide a clean, low-noise power supply to the VDD pin. Use a 10 µF ceramic capacitor in parallel with a 0.1 µF capacitor placed as close to the VDD pin as possible. This helps filter high-frequency noise and ensures stable operation of the ADC.
For optimal performance, route the analog input traces with controlled impedance and keep them away from digital signals. Use a solid ground plane under the ADC and avoid ground loops. Place the reference decoupling capacitor (10 µF) close to the REF pin to minimize noise.
Ensure that the SPI interface signals (SCLK, SDI, SDO, CS) are properly terminated and have adequate drive strength. Avoid long traces that can cause signal integrity issues at high data rates. Also, verify that the reference voltage is stable and within the specified range to maintain accuracy.
Compliance Information
RoHS compliant per JLCPCB listing. AEC-Q100 qualification not specified; for automotive use, verify with manufacturer.
