AD5764BSUZ

Overview

The AD5764BSUZ 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 proprietary power-up/power-down control circuitry. Key performance specifications include a maximum integral nonlinearity (INL) error of ±2 LSB for the B grade, a settling time of 10 μs maximum, and low noise spectral density of 60 nV/√Hz. It supports simultaneous updating via LDAC and includes digital offset and gain adjust registers per channel.

Feature Summary

• Quad, 16-bit resolution with guaranteed monotonicity
• B Grade accuracy: ±2 LSB maximum INL error
• Integrated reference buffers and output amplifiers
• Serial interface compatible with DSP/microcontrollers up to 30 MHz
• Digital offset and gain adjustment registers per channel

Applications

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

Procurement Notes

Verify the specific 'B' grade designation in the part number against the manufacturer's ordering guide to confirm the ±2 LSB INL specification. Ensure the design accommodates the required analog supply rails of ±11.4 V to ±16.5 V and digital supply of 2.7 V to 5.25 V. Confirm package availability in the 32-lead TQFP format.

Selection Notes

Select the AD5764BSUZ when a balance between high precision and cost is required, as it offers ±2 LSB INL compared to the ±1 LSB of the C grade. Verify that the application requires bipolar voltage outputs within the ±10 V to ±14 V range depending on supply voltage. Ensure the system can support the 32-lead TQFP footprint and industrial temperature range of −40°C to +85°C.

Part Context

The AD5764 series comprises four grades (A, B, C, and R) differentiated primarily by accuracy and the presence of an internal reference. The AD5764BSUZ represents the mid-tier accuracy option with ±2 LSB INL. It shares the same architecture and pinout as the AD5764CSUZ but with relaxed linearity specifications. The 'R' variant includes an internal voltage reference, whereas the BSUZ requires external reference inputs.

Replacement Considerations

The AD5764CSUZ is a direct pin-compatible replacement offering higher accuracy (±1 LSB INL). For applications requiring an internal reference, the AD5764R is available but may require external decoupling adjustments. The AD5744R is a 14-bit alternative with an internal reference.