AD7945BRZ-REEL

Overview

The AD7945BRZ-REEL is a 12-bit multiplying digital-to-analog converter (DAC) from Analog Devices, featuring a parallel interface. It operates on a single +5 V supply in Normal Mode or +3.3 V to +5 V in Biased Mode. Key electrical specifications include ±0.5 LSB maximum Integral Nonlinearity (INL) and Differential Nonlinearity (DNL), a typical power dissipation of 5 mW, and a settling time of 600 ns to 0.01%. The device utilizes an R-2R segmented architecture and provides current output at the IOUT1 pin.

Feature Summary

• 12-bit resolution with guaranteed monotonicity over temperature
• ±0.5 LSB maximum INL and DNL for B Grade
• Low power consumption: typically 5 mW
• Fast settling time of 600 ns to 0.01% full-scale range

Applications

• Battery-powered instrumentation
• Laptop computers
• Upgrades for all 754x series DACs in 5 V designs

Procurement Notes

Verify the package type associated with the BRZ suffix against the specific datasheet revision, as it indicates a surface-mount SOP variant. Confirm that the REEL suffix matches the required manufacturing packaging format for automated assembly processes.

Selection Notes

Select this component when a 12-bit parallel input DAC is required with low glitch impulse characteristics. Ensure the system supports the 40 ns write pulsewidth timing constraints. Consider the AD7943 if a serial interface is preferred, or the AD7948 for an 8-bit byte interface.

Part Context

This part belongs to the AD7943/AD7945/AD7948 family of fast multiplying DACs. The AD7945 specifically distinguishes itself within the family by offering a 12-bit parallel data interface, whereas the AD7943 uses serial and the AD7948 uses an 8-bit byte interface.

Replacement Considerations

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