AD7304BRUZ-REEL7

Overview

The AD7304BRUZ-REEL7 is a quad, 8-bit digital-to-analog converter (DAC) from Analog Devices. It features four independent voltage-output channels with rail-to-rail buffered outputs and an external reference input range spanning VSS to VDD. The device utilizes a 3-wire SPI-compatible serial interface for data loading. It operates on supply voltages ranging from 2.7 V to 5.5 V, consuming less than 9 mW at 3 V. Key electrical parameters include ±1 LSB integral nonlinearity (INL), ±1 LSB differential nonlinearity (DNL), and a settling time of 1 µs to ±0.1% full scale. The component includes internal power-on reset and hardware shutdown capabilities.

Feature Summary

• Quad 8-bit DAC architecture with rail-to-rail output swing capability
• SPI-compatible 3-wire serial interface (SDI, CLK, CS)
• External reference input range covers VSS to VDD for flexible scaling
• Internal power-on reset ensures zero-scale output at startup

Applications

• Automotive output span voltage control
• Instrumentation digitally controlled calibration
• Pin-compatible replacement for AD7226 when VDD < 5.5 V

Procurement Notes

Verify the REEL7 suffix indicates tape-and-reel packaging containing 1000 units per reel. Confirm the BRUZ designation corresponds to the TSSOP-16 package variant. Ensure the operating temperature range matches the industrial specification (-40°C to +85°C). Cross-reference the datasheet revision C specifications against current manufacturing updates.

Selection Notes

Select this component when a compact quad DAC solution with serial interface control is required. The AD7304 is suitable for applications needing rail-to-rail output swings relative to the supply rails. Consider the AD7305 if a parallel interface is preferred instead of serial communication. Verify that the system logic levels are compatible with the specified VIL and VIH thresholds.

Part Context

This part belongs to the AD7304/AD7305 family of 3 V/5 V quad 8-bit DACs. The AD7304 variant specifically implements a serial interface, distinguishing it from the parallel-input AD7305. Both share identical internal DAC structures and performance characteristics, differing primarily in data input methods and pin counts.

Replacement Considerations

The datasheet identifies the AD7304 as a pin-compatible replacement for the AD7226 when operating with VDD less than 5.5 V. No other specific substitute part numbers are documented in the provided source material.