ADAQ4381-4BCPZ - Quad 14-Bit 4MSPS μModule DAQ | Analog Devices
MPN: ADAQ4381-4BCPZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $45.32 | $45.32 |
| 10 | $41.87 | $418.70 |
| 100 | $36.25 | $3,625.00 |
| 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.
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ADAQ4381-4BBCZ
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ADAQ4370-4BCPZ
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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 |
| Reference Voltage | 3.3 V (internal) |
| Input Type | Fully Differential |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Number of Bits | 14 |
| Data Acquisition System | Yes |
| Supply Voltage - Analog | [DATA_NEEDED: Supply Voltage - Analog] |
| Supply Voltage - Digital | [DATA_NEEDED: Supply Voltage - Digital] |
ADAQ4381-4BCPZ Pin Configuration
| Pin A1 | AVDD — Analog power supply |
| Pin A2 | AVSS — Analog ground |
| Pin B1 | VREF — Reference voltage output |
| Pin B2 | REFBUF — Reference buffer output |
| Pin C1 | AIN0+ — Positive analog input channel 0 |
| Pin C2 | AIN0- — Negative analog input channel 0 |
| Pin D1 | AIN1+ — Positive analog input channel 1 |
| Pin D2 | AIN1- — Negative analog input channel 1 |
| Pin E1 | AIN2+ — Positive analog input channel 2 |
| Pin E2 | AIN2- — Negative analog input channel 2 |
| Pin F1 | AIN3+ — Positive analog input channel 3 |
| Pin F2 | AIN3- — Negative analog input channel 3 |
| Pin G1 | DVDD — Digital power supply |
| Pin G2 | DVSS — Digital ground |
| Pin H1 | SCLK — Serial clock input |
| Pin H2 | SDI — Serial data input |
| Pin J1 | SDO — Serial data output |
| Pin J2 | CS — Chip select |
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, Motor Control, Vibration Analysis, Portable Instrumentation, Data Acquisition Systems, Medical Monitoring.
Industrial Process Control
The ADAQ4381-4 is ideal for industrial process control systems that require simultaneous monitoring of multiple analog signals. Its quad-channel architecture allows sampling of four sensors (e.g., temperature, pressure, flow) at 4 MSPS with 14-bit resolution. The integrated reference and buffer ensure accurate, stable measurements over the -40°C to +105°C range, making it suitable for harsh factory environments. The SPI interface simplifies connection to industrial microcontrollers, enabling real-time control loops.
Recommended
Motor Control
In motor control applications, the ADAQ4381-4 provides high-speed, simultaneous sampling of phase currents and voltages. The 4 MSPS sampling rate captures fast transients, while the 14-bit resolution ensures precise current sensing. The fully differential inputs reject common-mode noise, improving measurement accuracy in noisy motor drives. The compact CSPBGA package fits into space-constrained motor controllers, and the wide temperature range supports operation near motors. The integrated reference reduces external component count, simplifying BOM.
Recommended
Vibration Analysis
The ADAQ4381-4 is well-suited for vibration analysis in condition monitoring systems. Its 4 MSPS sampling rate and 14-bit resolution capture high-frequency vibration signals with good dynamic range. The quad-channel configuration allows simultaneous measurement from multiple accelerometers, enabling modal analysis. The integrated signal chain reduces noise and improves SNR, critical for detecting small vibrations. The device's small footprint and wide temperature range make it ideal for embedding in portable or fixed monitoring equipment.
Recommended
Portable Instrumentation
For portable instrumentation, the ADAQ4381-4 offers a compact, integrated solution that minimizes board space and power consumption. The 14-bit resolution and 4 MSPS sampling rate are sufficient for many handheld test and measurement devices. The integrated reference and buffer reduce external components, lowering BOM cost and design complexity. The device operates from -40°C to +105°C, ensuring reliability in field use. The SPI interface allows easy connection to low-power microcontrollers, extending battery life.
Recommended
Data Acquisition Systems
The ADAQ4381-4 is a complete data acquisition system in a single package, making it ideal for general-purpose DAQ applications. It integrates the ADC, drivers, reference, and buffer, eliminating the need for external components. The 14-bit resolution and 4 MSPS sampling rate provide a good balance of speed and accuracy. The quad-channel architecture enables simultaneous sampling, which is essential for phase-accurate measurements. The device's SPI interface simplifies integration with FPGAs and microcontrollers, accelerating development.
Recommended
Medical Monitoring
In medical monitoring, the ADAQ4381-4 provides high-resolution, multi-channel data acquisition for vital sign monitoring. The 14-bit resolution and 4 MSPS sampling rate capture physiological signals with good fidelity. The integrated reference and buffer ensure stable measurements, critical for patient safety. The device's small package is suitable for wearable or portable medical devices. The wide temperature range and robust design support reliable operation in clinical environments. The SPI interface enables connection to medical-grade microcontrollers.
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 |
|---|---|---|---|---|
| Package | 81-CSPBGA (8x8 mm) | 81-CSPBGA (8x8 mm) | 81-CSPBGA (8x8 mm) | 81-CSPBGA (8x8 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 14 bit | 14 bit | 16 bit | 16 bit |
| Sampling Rate | 4 MSPS | 4 MSPS | 4 MSPS | 2 MSPS |
| Number of Channels | 4 | 4 | 4 | 4 |
| Interface | Serial, SPI | Serial, SPI | Serial, SPI | Serial, SPI |
| Operating Temperature | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C |
| Reference | Internal 3.3V | Internal 3.3V | Internal 3.3V | Internal 3.3V |
Key Differentiators
- Integrated signal chain reduces component count (vs Discrete ADC solutions)
- Quad-channel simultaneous sampling (vs Single-channel ADCs)
- Wide temperature range (vs Commercial-grade ADCs)
Design Notes
Ensure clean power supplies for AVDD and DVDD. Use low-noise LDOs, such as the ADP150, to power the analog supply and minimize noise coupling. Decouple each supply pin with 0.1uF and 10uF capacitors placed close to the device. The separate logic supply allows independent digital voltage levels, but avoid digital noise from coupling into the analog supply.
For optimal performance, use a solid ground plane and separate analog and digital ground planes if possible. Place the ADAQ4381-4 close to the signal source to minimize trace length and reduce noise pickup. Route differential input pairs with matched lengths and avoid crossing digital traces. Use via stitching to connect ground planes and reduce EMI.
Do not exceed the absolute maximum ratings for supply voltages. Ensure the reference pin is properly bypassed with a 10uF capacitor to maintain stability. The SPI interface should be operated within the specified timing to avoid data corruption. Avoid floating unused inputs; tie them to ground or a defined voltage.
Compliance Information
RoHS compliant per Analog Devices product page. Other compliance data not specified in provided sources.
