AD5681RBCPZ-1RL

Overview

The AD5681RBCPZ-1RL is a single-channel, 12-bit buffered voltage output digital-to-analog converter (DAC) from the nanoDAC+ family. It features an internal 2.5 V reference with a typical drift of 2 ppm/°C and operates on a single 2.7 V to 5.5 V supply. The device supports selectable output spans of 0 V to VREF or 0 V to 2 × VREF. It utilizes a versatile 3-wire serial interface compatible with SPI, operating at clock rates up to 50 MHz. Key performance metrics include ±1 LSB maximum INL, ±1 LSB DNL, and a low glitch impulse of 0.1 nV-sec. The component is housed in an ultrasmall 2 mm × 2 mm, 8-lead LFCSP package.

Feature Summary

• 12-bit resolution with ±1 LSB maximum relative accuracy (INL) and guaranteed monotonicity.
• Integrated 2.5 V reference source with 2 ppm/°C typical temperature coefficient.
• Programmable output span: 0 V to VREF or 0 V to 2 × VREF.
• 3-wire serial interface supporting clock rates up to 50 MHz.

Applications

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

Procurement Notes

Verify the specific suffix '-1' against the manufacturer's official ordering guide to confirm pin configuration options such as VLOGIC or RESET availability. Ensure the selected variant matches the required logic voltage range of 1.62 V to 5.5 V for proper system integration.

Selection Notes

Select this component for applications requiring high precision in a minimal footprint. The internal reference eliminates external components for standard 2.5 V references. Consider the gain setting (Gain = 1 or Gain = 2) when designing the output stage to meet specific voltage swing requirements within the 2.7 V to 5.5 V supply range.

Part Context

This part belongs to the AD5683R/AD5682R/AD5681R series, which shares identical pinouts and core functionality but differs in resolution (16-bit, 14-bit, and 12-bit respectively). The AD5681R specifically targets cost-sensitive applications where 12-bit accuracy is sufficient, offering the same package options and interface compatibility as its higher-resolution counterparts.

Replacement Considerations

Direct functional replacements within the same family include the AD5682R (14-bit) and AD5683R (16-bit), provided higher resolution is acceptable. For external reference configurations, the AD5683 serves as a compatible alternative without the internal reference.