AD7943BR-REEL

Overview

The AD7943BR-REEL is a 12-bit multiplying digital-to-analog converter (DAC) from Analog Devices, part of the AD7943/AD7945/AD7948 family. It features a serial interface and operates from a single +5 V supply in Normal Mode or a +3.3 V to +5 V supply in Biased Mode. The device guarantees ±0.5 LSB relative accuracy with no missing codes. Key electrical parameters include a typical power dissipation of 5 mW, a settling time of 600 ns to 0.01%, and a glitch impulse of 60 nV-s. It is housed in a 16-lead SOP package.

Feature Summary

• 12-bit resolution with guaranteed monotonicity over temperature
• Serial interface with 40 ns strobe pulsewidth
• Low power consumption: 5 mW typical
• Fast settling time: 600 ns to 0.01% full-scale range

Applications

• Battery-powered instrumentation
• Laptop computers
• Upgrades for AD754x series DACs in 5 V designs

Procurement Notes

Verify the specific reel packaging configuration against the manufacturer's current ordering guide. Confirm that the B grade temperature range (-40 °C to +85 °C) meets the operational requirements. Ensure compatibility with the 16-lead SOP footprint during PCB layout.

Selection Notes

Select this component when a serial interface is required for space-constrained designs. The AD7943 is distinct from the parallel AD7945 and byte-interface AD7948 within the same family. Choose the -B suffix version for standard single-supply operation up to +5 V.

Part Context

This part belongs to the AD7943/AD7945/AD7948 series of fast 12-bit multiplying DACs. These devices are designed to replace industry-standard AD754x series components, offering superior speed and lower power consumption while maintaining pin-out compatibility for many applications.

Replacement Considerations

Direct replacements include other AD7943 variants such as AD7943BN (DIP) or AD7943BRS (SSOP). For parallel interface needs, consider the AD7945. For byte-interface needs, consider the AD7948.