AD7305BRZ-REEL

Overview

The AD7305BRZ-REEL is a quad, 8-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It features four independent voltage-output DACs within a single package, utilizing an R-2R ladder architecture with internal precision buffers that swing rail-to-rail. The device operates from a single +3 V to +5 V supply or ±5 V supplies, consuming less than 9 mW at 3 V. Key electrical specifications include a maximum integral nonlinearity (INL) and differential nonlinearity (DNL) of ±1 LSB, a reference multiplying bandwidth of 2.6 MHz, and a typical settling time of 1 µs to ±0.1% full scale. It employs a fast parallel interface for data loading.

Feature Summary

• Quad 8-bit DAC architecture with internal power-on reset and hardware shutdown capability via the A0/SHDN pin.
• Rail-to-rail reference input to voltage output swing, allowing full-scale output equal to supply rails.
• Fast parallel interface using standard address decode and WR control line for data loading.
• Pin-compatible replacement for AD7226 when operating with VDD < 5.5 V.

Applications

• Automotive output span voltage generation
• Instrumentation and digitally controlled calibration systems
• Replacement for AD7226 in applications requiring VDD < 5.5 V

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm packaging details. The REEL suffix indicates tape-and-reel packaging. Confirm RoHS compliance status and lead-free availability through official distributor channels prior to procurement.

Selection Notes

Select the AD7305BRZ-REEL when a parallel interface is required instead of the serial AD7304 variant. Ensure the application supports the 20-lead SOIC package dimensions. Verify that the system logic levels match the specified VIL and VIH thresholds for reliable data transfer across the parallel bus.

Part Context

This component belongs to the AD7304/AD7305 family of 3 V/5 V rail-to-rail quad 8-bit DACs. While the AD7304 utilizes a serial SPI-compatible interface, the AD7305 variant specifically implements a parallel interface. Both share identical analog performance characteristics, including the R-2R architecture and rail-to-rail output buffers.

Replacement Considerations

The AD7305 is explicitly documented as a pin-compatible replacement for the AD7226 when the supply voltage is less than 5.5 V. No other substitute part numbers are confirmed in the provided documentation.