AD5681RBRMZ-RL7

Overview

The AD5681RBRMZ-RL7 is a single-channel, 12-bit buffered voltage output digital-to-analog converter (DAC) from the nanoDAC+ family. It operates on a single 2.7 V to 5.5 V supply and features an internal 2.5 V reference with a typical drift of 2 ppm/°C. The device utilizes a versatile 3-wire SPI serial interface supporting clock rates up to 50 MHz. Key performance metrics include ±1 LSB maximum INL, ±1 LSB DNL, and a total unadjusted error (TUE) of 0.075% FSR with an external reference. It offers selectable output spans of VREF or 2 × VREF, low power consumption of 1.2 mW at 3.3 V, and robust 4 kV HBM ESD protection.

Feature Summary

• 12-bit resolution with ±1 LSB maximum INL and DNL
• Internal 2.5 V reference with 2 ppm/°C typical temperature coefficient
• Selectable output span: VREF or 2 × VREF
• Low power consumption: 1.2 mW at 3.3 V; 2 µA max in power-down mode

Applications

• Process control systems
• Data acquisition systems
• Digital gain and offset adjustment circuits
• Programmable voltage sources

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when sourcing. Confirm the B grade designation for ±1 LSB INL accuracy. Ensure the BRMZ package type matches the target PCB footprint requirements. Check for availability of the -RL7 variant as distribution status may vary by region.

Selection Notes

Select this component for applications requiring high relative accuracy in a small form factor. The internal reference simplifies design by eliminating external precision references. Verify that the 12-bit resolution meets system requirements, as higher precision models like the AD5682R or AD5683R are available within the same family if needed.

Part Context

This part belongs to the AD568xR nanoDAC+ family, which includes 16-bit (AD5683R), 14-bit (AD5682R), and 12-bit (AD5681R) variants. All members share similar pinouts and interfaces but differ in resolution and accuracy grades. The AD5681R specifically targets cost-sensitive applications where 12-bit precision is sufficient.

Replacement Considerations

Direct functional replacements within the same family include AD5682RBRMZ-RL7 (14-bit) and AD5683RBRMZ-RL7 (16-bit). These offer higher resolution but maintain compatible pinouts and interfaces. External reference versions like AD5683 require external reference components.