AD7305BRZ

Overview

The AD7305BRZ is a quad, 8-bit digital-to-analog converter (DAC) from Analog Devices Inc., housed in a 20-lead wide-body SOIC package. It features a fast parallel interface with standard address decode and a WR control line for data loading. The device operates from single +3 V to +5 V or ±5 V supplies, consuming less than 9 mW at 3 V. Internal precision buffers provide true rail-to-rail output swing, while the reference input range includes both supply rails. Key specifications include 1 µs settling time, ±1 LSB INL/DNL, and an internal power-on reset that initializes outputs to zero scale.

Feature Summary

• Quad 8-bit DAC architecture with voltage buffered rail-to-rail outputs
• Fast parallel interface utilizing DB0-DB7, A0/A1 address lines, and WR strobe
• Operates on single +2.7 V to +5.5 V or dual ±5 V supplies
• Internal power-on reset ensures zero-scale output state upon initialization

Applications

• Automotive output span voltage control
• Instrumentation and digitally controlled calibration systems
• Pin-compatible replacement for AD7226 when operating below 5.5 V

Procurement Notes

Verify the specific suffix 'RZ' indicates tube packaging rather than reel variants like REEL7. Confirm RoHS compliance status through official documentation as requirements may vary by manufacturing date. Ensure the supplier provides valid traceability for the Analog Devices manufacturer identification.

Selection Notes

Select this component over the AD7304 when a parallel interface is preferred over the serial SPI connection. Verify that the system logic levels support the specified VIL and VIH thresholds. Ensure the application requires four independent channels within a single package to justify the 20-pin footprint.

Part Context

This part belongs to the AD7304/AD7305 family of low-power, rail-to-rail DACs. While the AD7304 utilizes a serial interface, the AD7305 variant specifically implements a parallel data path. Both share identical analog performance characteristics and pinout compatibility with legacy industry-standard devices under specific voltage conditions.

Replacement Considerations

The datasheet identifies the AD7305 as a pin-compatible replacement for the AD7226 when the supply voltage is less than 5.5 V.