AD7305BRUZ

Overview

The AD7305BRUZ is a quad, 8-bit digital-to-analog converter (DAC) from Analog Devices Inc., housed in a 20-lead TSSOP package. It features a fast parallel interface with standard address decode and WR control lines for data loading. The device operates on single supplies of +2.7 V to +5.5 V or dual supplies of ±5 V. Internal precision buffers provide rail-to-rail voltage output swing, matching the reference input range. Key electrical specifications include an integral nonlinearity (INL) and differential nonlinearity (DNL) of ±1 LSB maximum, a settling time of 1 µs to ±0.1% full scale, and a power-on reset function that initializes outputs to zero scale.

Feature Summary

• Quad 8-bit DAC architecture with internal rail-to-rail buffered outputs
• Fast parallel interface utilizing DB0-DB7, A0/A1 address bits, and WR control
• Operates from single +2.7 V to +5.5 V or dual ±5 V supplies
• Internal power-on reset ensures zero-scale output at startup

Applications

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

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm packaging type, as suffixes denote variations such as tube or reel quantities. Confirm RoHS compliance status and lead material specifications directly with the supplier prior to procurement. Ensure the component source matches the original manufacturer to guarantee performance reliability.

Selection Notes

Select the AD7305BRUZ when a parallel interface is required for the AD7305 family; use the AD7304 variant if a serial SPI-compatible interface is preferred. Verify that the system logic levels align with the specified VIL and VIH thresholds. Ensure the external reference voltage remains within the VSS to VDD range to maintain rail-to-rail output capability.

Part Context

The AD7305BRUZ belongs to the AD7304/AD7305 series of low-power, quad 8-bit DACs. While the AD7304 utilizes a serial interface, the AD7305 provides a parallel interface for faster data throughput. Both devices share identical analog performance characteristics, including R-2R ladder architecture and rail-to-rail output buffers, differing primarily in digital control logic and pin count.

Replacement Considerations

The datasheet identifies the AD7305 as a pin-compatible replacement for the AD7226 when operating with a supply voltage less than 5.5 V. No other direct substitute part numbers are documented in the provided source material.