AD5732AREZ

Overview

The AD5732AREZ is a dual, 14-bit serial input digital-to-analog converter (DAC) from Analog Devices Inc. It operates from single or dual supplies ranging from +4.5 V to +16.5 V and ±4.5 V to ±16.5 V. The device features software-programmable output ranges including +5 V, +10 V, +10.8 V, ±5 V, ±10 V, and ±10.8 V. Key electrical specifications include a typical settling time of 10 μs, total unadjusted error (TUE) of 0.1% FSR maximum, and INL/DNL errors of ±4 LSB and ±1 LSB respectively. It utilizes an iCMOS process and communicates via a DSP/microcontroller-compatible serial interface.

Feature Summary

• Dual-channel 14-bit resolution with integrated reference buffers and output amplifiers
• Software-selectable unipolar/bipolar output voltage ranges (+5 V to ±10.8 V)
• Serial interface supporting clock rates up to 30 MHz with simultaneous updating capability
• Asynchronous clear function to zero-scale or midscale and power-up control circuitry

Applications

• Industrial automation systems
• Closed-loop servo control and process control
• Automotive test and measurement equipment
• Programmable logic controllers

Procurement Notes

Verify the specific revision level (Rev. F datasheet referenced) and package type (24-lead TSSOP) against design requirements. Confirm supply voltage compatibility for both analog (AVDD/AVSS) and digital (DVCC) domains. Ensure thermal management considerations are addressed for the exposed paddle in the TSSOP-EP package if high power dissipation is expected.

Selection Notes

Select the AD5732AREZ when 14-bit resolution is required for dual-channel applications. Compare against AD5722 (12-bit) for lower cost/performance needs or AD5752 (16-bit) for higher precision. Verify that the serial interface timing parameters meet the microcontroller or DSP clock speeds. Check if the integrated reference buffers suffice or if an external high-precision reference is needed for strict accuracy requirements.

Part Context

The AD5732AREZ belongs to the AD5722/AD5732/AD5752 family of complete, dual, serial input DACs. It shares pinout and functional similarities with the quad-channel variants AD5724/AD5734/AD5754. The 'A' suffix typically denotes the industrial temperature range (-40°C to +85°C), and 'REZ' indicates the 24-lead TSSOP package with an exposed paddle.

Replacement Considerations

Direct pin-compatible substitutes within the same family include the AD5722AREZ (12-bit) and AD5752AREZ (16-bit). For quad-channel requirements, the AD5734AREZ is compatible. Verify that the replacement meets the specific resolution and accuracy (INL/TUE) requirements of the original design.