AD5764ASUZ

Overview

The AD5764ASUZ is a quad, 16-bit digital-to-analog converter (DAC) featuring serial input and bipolar voltage output. It operates from supply voltages of ±11.4 V to ±16.5 V with a nominal full-scale output range of ±10 V. The device integrates output amplifiers, reference buffers, and power-up control circuitry. Key performance metrics include a maximum settling time of 10 μs, low noise of 60 nV/√Hz, and guaranteed monotonicity. The C-grade variant specified by the ASUZ suffix ensures integral nonlinearity (INL) and differential nonlinearity (DNL) errors of ±1 LSB maximum.

Feature Summary

• Quad 16-bit resolution with ±1 LSB max INL/DNL error
• Integrated reference buffers and output amplifiers
• Programmable output ranges: ±10 V, ±10.2564 V, or ±10.5263 V
• Digital offset and gain adjust registers per channel
• Simultaneous updating via LDAC pin

Applications

• Industrial automation systems
• Open-loop and closed-loop servo control
• Process control applications
• Data acquisition systems
• Automatic test equipment

Procurement Notes

Verify the grade designation within the part number; the 'C' in AD5764CSUZ indicates ±1 LSB INL/DNL, whereas 'A' or 'B' grades offer higher error tolerances. Confirm that the external reference voltage applied to REFAB/REFCD pins falls within the 1 V to 7 V range to ensure specified performance. Ensure power supply rails are strictly maintained between ±11.4 V and ±16.5 V to prevent damage or specification degradation.

Selection Notes

Select the AD5764ASUZ when high accuracy (±1 LSB INL) is required for multi-channel applications. The device supports both offset binary and two's complement input coding via the BIN/2sCOMP pin. Consider the integrated reference buffers if board space for external buffer amplifiers is limited. Verify that the serial interface clock rate does not exceed 50 MHz for reliable data transfer.

Part Context

The AD5764 belongs to the iCMOS process technology family, designed for high-performance analog ICs operating at ±15 V supplies. It is part of a series that includes variants like the AD5764R (with internal reference) and the 14-bit AD5744R. The ASUZ package denotes a 32-lead TQFP with an industrial temperature range of −40°C to +85°C.

Replacement Considerations

The AD5764R serves as a direct replacement if an internal voltage reference is preferred over an external one. For lower resolution requirements, the AD5744R offers a 14-bit alternative with similar form factors. Note that pin compatibility exists across the AD5764 family, but electrical specifications such as INL and power consumption may vary between grades.