AD7305YRZ

Overview

The AD7305YRZ is a quad, 8-bit digital-to-analog converter (DAC) from Analog Devices. It features four independent voltage-output channels with internal precision buffers that swing rail-to-rail. The device utilizes a fast parallel interface for data loading and supports operation from single +3 V to +5 V supplies or ±5 V dual supplies. Key electrical parameters include an 8-bit resolution, a reference multiplying bandwidth of 2.6 MHz, and a typical settling time of 1 µs to ±0.1% full scale. It operates within a supply voltage range of 2.7 V to 5.5 V.

Feature Summary

• Quad 8-bit DAC architecture with rail-to-rail buffered outputs
• Fast parallel interface with standard address decode and WR control
• Internal power-on reset ensures zero-scale output at turn-on
• Hardware shutdown capability via the A0/SHDN pin

Applications

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

Procurement Notes

Verify the specific suffix YRZ against the manufacturer's current ordering guide to confirm package type and temperature grade. Confirm availability status as distribution stocks vary. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS input structure.

Selection Notes

Select the AD7305YRZ over the AD7304 when a parallel interface is preferred over serial communication. This component is suitable for applications requiring simultaneous updates of multiple channels using the LDAC strobe. Verify that the system logic levels match the specified VIH and VIL requirements for the parallel data bus.

Part Context

The AD7305 belongs to the AD7304/AD7305 family of low-power, quad 8-bit DACs. While the AD7304 uses a serial SPI-compatible interface, the AD7305 variant provides a parallel interface for faster data throughput in multi-channel systems. Both share identical analog performance characteristics and pinouts relative to their respective interface types.

Replacement Considerations

The datasheet identifies the AD7305 as a pin-compatible replacement for the industry-standard AD7226 when operating with VDD less than 5.5 V. Designers should verify that the AD7226's specific timing or drive requirements are met by the AD7305 specifications before substitution.