AD7302BRZ-REEL

Overview

The AD7302BRZ-REEL is a dual, 8-bit voltage output digital-to-analog converter (DAC) from Analog Devices Inc. It operates on a single +2.7 V to +5.5 V supply and features on-chip precision output buffers that allow rail-to-rail voltage swing. The device utilizes a parallel microprocessor and DSP-compatible interface with high-speed registers and double-buffered logic. Key electrical parameters include a typical settling time of 1.2 μs, a maximum power-down current of 1 μA at 25°C, and an internal reference capability derived from VDD or an external REFIN pin.

Feature Summary

• Dual 8-bit DACs in one package with rail-to-rail output buffering
• Parallel interface compatible with standard microprocessors and DSPs
• Internal or external reference selection via the REFIN pin
• Power-down mode reduces current consumption to less than 1 μA

Applications

• Portable battery-powered instruments
• Digital gain and offset adjustment circuits
• Programmable voltage and current sources
• Programmable attenuators

Procurement Notes

Verify the BRUZ suffix indicates the TSSOP-20 package and B version temperature range (-40°C to +105°C). Confirm the REEL designation matches required tape-and-reel quantities. Ensure compatibility with single-supply operation between 2.7 V and 5.5 V for the specific application environment.

Selection Notes

Select this component when dual-channel 8-bit resolution with fast parallel loading is required. The internal buffer eliminates the need for external op-amps for rail-to-rail outputs. Consider the 1.2 μs settling time for bandwidth requirements. Verify if simultaneous update via LDAC or automatic update modes fit the system timing constraints.

Part Context

This part belongs to the AD7302 family of dual 8-bit DACs. It shares functional similarities with the AD7303 (serial interface) and AD7304 (quad serial), but distinguishes itself through its parallel data interface and dual-channel configuration within a 20-lead package format.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.