AD7943BRZ-REEL

Overview

The AD7943BRZ-REEL is a 12-bit multiplying digital-to-analog converter (DAC) from Analog Devices, featuring a serial interface. It 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 and monotonicity over temperature. 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 utilizes a segmented architecture with an R-2R ladder for the lower 10 bits.

Feature Summary

• 12-bit resolution with guaranteed ±0.5 LSB INL and DNL
• Serial interface with 40 ns strobe pulsewidth
• Low power consumption: 5 mW typical
• Fast settling time of 600 ns to 0.01%

Applications

• Battery-powered instrumentation
• Laptop computers
• Upgrades for AD754x series DACs

Procurement Notes

Verify the package type corresponds to the 'R' suffix, which indicates a Small Outline Package (SOP). Confirm the reel packaging matches production requirements. Ensure the operating voltage range aligns with the specific mode (Normal vs. Biased) required for the application design.

Selection Notes

Select this component when a serial interface is preferred over parallel options like the AD7945. Choose the B grade for industrial temperature ranges (-40°C to +85°C). Consider the AD7943 specifically for space-constrained designs requiring fewer data lines compared to parallel DACs.

Part Context

This part belongs to the AD7943/AD7945/AD7948 family of fast 12-bit multiplying DACs. While the AD7945 uses a parallel interface and the AD7948 uses an 8-bit byte interface, the AD7943 is distinguished by its serial input capability. All three share similar performance characteristics and pinouts where applicable.

Replacement Considerations

The datasheet explicitly states these devices will replace the industry-standard AD7543, AD7545, and AD7548 in many applications due to superior speed and power consumption.