ADAQ4381-4BCPZ - Quad 14-Bit μModule DAQ | Analog Devices
MPN: ADAQ4381-4BCPZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $45.32 | $45.32 |
| 10 | $41.87 | $418.70 |
| 100 | $36.54 | $3,654.00 |
| 500 | $32.1 | $16,050.00 |
| 1,000 | $28.75 | $28,750.00 |
Drop-in alternatives for ADAQ4381-4BCPZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADAQ4381-4BBCZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADAQ4380-4BCPZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADAQ4370-4BCPZ
✅ Drop-In📋 Reference alternative (not in catalog)
AD7384-4BCPZ
✅ Drop-In✓ In Stock
$11.05 / Unit
View Datasheet →AD7383-4BCPZ
✅ Drop-In✓ In Stock
$30.5 / Unit
View Datasheet →ADAQ4381-4BCPZ Maximum Ratings & Electrical Characteristics
| Resolution | 14 bit |
| Number of Channels | 4 |
| Sampling Rate | 4 MSPS |
| Interface | Serial SPI |
| Package | 81-CSPBGA (8x8 mm) |
| Operating Temperature Range | -40°C to +105°C |
| Logic Supply Voltage | 1.8 V, 2.5 V, 3.3 V |
| Analog Supply Voltage | [DATA_NEEDED: Analog supply voltage] |
| Reference Voltage | 3.3 V (internal) |
| Input Type | Fully differential |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Number of Bits | 14 |
| Data Acquisition System Type | μModule |
| Supply Voltage Range | [DATA_NEEDED: Supply voltage range] |
ADAQ4381-4BCPZ Pin Configuration
| Pin A1 | AVDD — Analog power supply |
| Pin A2 | AIN0+ — Positive analog input channel 0 |
| Pin A3 | AIN0- — Negative analog input channel 0 |
| Pin B1 | AVSS — Analog ground |
| Pin B2 | AIN1+ — Positive analog input channel 1 |
| Pin B3 | AIN1- — Negative analog input channel 1 |
| Pin C1 | DVDD — Digital power supply |
| Pin C2 | AIN2+ — Positive analog input channel 2 |
| Pin C3 | AIN2- — Negative analog input channel 2 |
| Pin D1 | DGND — Digital ground |
| Pin D2 | AIN3+ — Positive analog input channel 3 |
| Pin D3 | AIN3- — Negative analog input channel 3 |
| Pin E1 | SCLK — Serial clock input |
| Pin E2 | SDI — Serial data input |
| Pin E3 | SDO — Serial data output |
| Pin F1 | CS — Chip select |
| Pin F2 | REF — Reference voltage input/output |
| Pin F3 | VIO — Logic supply voltage |
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
ADAQ4381-4BCPZ is suitable for 6 applications: Industrial Process Control, Automated Test Equipment, Medical Instrumentation, Multi-Channel Data Logging, Three-Phase Power Monitoring, Vibration Analysis.
Industrial Process Control
The ADAQ4381-4BCPZ provides four simultaneous 14-bit channels at 4 MSPS, ideal for monitoring multiple process variables like temperature, pressure, and flow. Its integrated reference and drivers reduce external component count, simplifying design in harsh industrial environments. The wide operating temperature range of -40°C to +105°C ensures reliable operation in factory floors. The SPI interface allows easy integration with industrial microcontrollers, enabling real-time control and data logging. Compared to discrete solutions, the μModule reduces board space and improves noise performance, critical for accurate process monitoring.
Recommended
Automated Test Equipment
In ATE, the ADAQ4381-4BCPZ enables high-speed, multi-channel data acquisition for testing electronic devices. Its 4 MSPS sampling rate and 14-bit resolution capture fast transients with good accuracy. The integrated reference and buffer ensure stable measurements over temperature, reducing calibration drift. The compact CSPBGA package allows dense channel density on test boards. The SPI interface supports daisy-chaining multiple devices for scalable channel counts. The μModule approach reduces design time and BOM cost, making it ideal for production test systems where reliability and speed are paramount.
Recommended
Medical Instrumentation
The ADAQ4381-4BCPZ is suitable for medical devices requiring multi-channel, high-resolution data acquisition, such as patient monitoring and diagnostic equipment. Its low noise and integrated reference ensure accurate signal capture, critical for biomedical signals. The quad-channel architecture allows simultaneous sampling of multiple physiological signals, like ECG and EEG. The wide temperature range and compact package enable portable designs. The SPI interface simplifies connection to medical-grade microcontrollers. The μModule reduces design risk and speeds time-to-market for regulated medical devices.
Recommended
Multi-Channel Data Logging
The ADAQ4381-4BCPZ excels in data logging applications where multiple analog signals must be captured simultaneously. Its 4 MSPS sampling rate and 14-bit resolution provide high-fidelity recording of dynamic signals. The integrated reference and buffer maintain accuracy over long logging sessions. The SPI interface allows efficient data transfer to storage or processing units. The compact package enables portable loggers. The μModule simplifies design, reducing the risk of noise and layout issues. This makes it ideal for environmental monitoring, vibration analysis, and energy logging.
Recommended
Three-Phase Power Monitoring
The ADAQ4381-4BCPZ is well-suited for three-phase power monitoring systems, where simultaneous sampling of voltage and current signals is essential. Its four channels can capture all three phases plus neutral, with 14-bit resolution and 4 MSPS speed to accurately measure harmonics and transients. The integrated reference ensures stable measurements over temperature. The SPI interface allows easy integration with power management processors. The μModule reduces component count and board space, enabling compact energy meters. The wide temperature range supports outdoor installation.
Recommended
Vibration Analysis
The ADAQ4381-4BCPZ is ideal for vibration analysis in industrial machinery, where multiple accelerometer signals need simultaneous sampling. Its 4 MSPS rate captures high-frequency vibrations, and 14-bit resolution provides good dynamic range. The integrated reference and buffer ensure low noise, preserving signal fidelity. The quad-channel architecture allows monitoring multiple axes or sensors. The SPI interface enables fast data streaming to DSPs or FPGAs. The compact package suits embedded condition monitoring systems. The μModule simplifies design, reducing time-to-market for predictive maintenance solutions.
Recommended
Recommended Products Summary
Engineering reference data for ADAQ4381-4BCPZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADAQ4381-4BBCZ | ADAQ4380-4BCPZ | ADAQ4370-4BCPZ | AD7384-4BCPZ |
|---|---|---|---|---|---|
| Package | 81-CSPBGA (8x8) | 81-CSPBGA (8x8) | 81-CSPBGA (8x8) | 81-CSPBGA (8x8) | 81-CSPBGA (8x8) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 14 bit | 14 bit | 16 bit | 14 bit | 16 bit |
| Sampling Rate | 4 MSPS | 4 MSPS | 4 MSPS | 2 MSPS | 4 MSPS |
| Integrated Reference | Yes | Yes | Yes | Yes | No |
| Integrated Drivers | Yes | Yes | Yes | Yes | No |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +125°C |
| Logic Supply Voltage | 1.8V, 2.5V, 3.3V | 1.8V, 2.5V, 3.3V | 1.8V, 2.5V, 3.3V | 1.8V, 2.5V, 3.3V | 1.8V, 2.5V, 3.3V |
Key Differentiators
- Integrated μModule reduces component count (vs AD7384-4BCPZ)
- Higher sampling rate than ADAQ4370-4 (vs ADAQ4370-4BCPZ)
- 14-bit resolution with integrated reference (vs AD7384-4BCPZ)
Design Notes
Ensure clean and stable power supplies for AVDD and DVDD. Use low-dropout regulators (LDOs) with low noise and high PSRR to minimize supply-induced noise. Decouple each supply pin with 0.1 µF and 10 µF capacitors placed close to the pins. The separate logic supply (VIO) should be decoupled with 0.1 µF capacitor. Proper power sequencing is recommended to avoid latch-up.
Use a solid ground plane and separate analog and digital ground planes, connecting them at a single point near the device. Route analog inputs away from digital traces to minimize coupling. Place the reference decoupling capacitor close to the REF pin. For the CSPBGA package, ensure adequate thermal vias under the exposed pad for heat dissipation. Follow the layout guidelines in the datasheet for optimal performance.
The SPI interface should be routed with controlled impedance and matched trace lengths to avoid signal integrity issues at high clock rates. Use series termination resistors (e.g., 33 Ω) near the driver to reduce reflections. Keep the SPI bus short and avoid crossing analog signals. For multi-device configurations, ensure proper CS decoding and minimize bus capacitance.
Compliance Information
RoHS compliance inferred from distributor listings. Other compliance data not explicitly provided in verified data.
