AD7945BRSZ

Overview

The AD7945BRSZ is a 12-bit multiplying digital-to-analog converter (DAC) from Analog Devices, housed in a 20-lead SSOP package. It features a parallel interface and operates on a single +5 V supply with guaranteed specifications at this voltage. Key electrical parameters include ±0.5 LSB maximum integral and differential nonlinearity, a typical power consumption of 5 mW, and a settling time of 600 ns to 0.01%. The device supports an industrial temperature range of –40 °C to +85 °C and provides current output.

Feature Summary

• 12-bit resolution with ±0.5 LSB INL and DNL accuracy
• Parallel data interface with active-low Chip Select and Write inputs
• Low power consumption: typically 5 mW at +5 V supply
• Fast settling time of 600 ns to 0.01% full-scale range

Applications

• Battery-powered instrumentation
• Laptop computer systems
• Upgrades for legacy 754x series DAC designs

Procurement Notes

Verify the specific ordering suffix 'R' corresponds to the SSOP package option as defined in the manufacturer's ordering guide. Confirm that the B grade specifications meet the required linearity and temperature range for the intended application environment before finalizing procurement.

Selection Notes

Select the AD7945BRSZ when a 12-bit parallel interface is required alongside low power consumption and high speed. Ensure the design accommodates the 20-lead SSOP footprint. Compare against the AD7943 if serial interface capability is needed instead of parallel connectivity.

Part Context

This component belongs to the AD7943/AD7945/AD7948 family of fast 12-bit multiplying DACs. While the AD7943 offers a serial interface and the AD7948 uses an 8-bit byte interface, the AD7945 specifically provides a 12-bit parallel input structure for direct bus connection.

Replacement Considerations

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