AD5681RBCPZ-1RL7

Overview

The AD5681RBCPZ-1RL7 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 utilizes a versatile 3-wire SPI serial interface supporting clock rates up to 50 MHz. Key performance metrics include ±1 LSB maximum relative accuracy (INL), ±1 LSB differential nonlinearity (DNL), and a low glitch impulse of 0.1 nV-sec. It offers selectable output spans of 0 V to VREF or 0 V to 2 × VREF, high drive capability of 20 mA, and low power consumption of 1.2 mW at 3.3 V.

Feature Summary

• 12-bit resolution with ±1 LSB INL and DNL guarantees monotonic operation by design.
• Integrated 2.5 V reference with 2 ppm/°C typical temperature coefficient.
• Selectable output span: 0 V to VREF or 0 V to 2 × VREF.
• High drive capability of 20 mA and low glitch impulse of 0.1 nV-sec.

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 pinout configuration, as variants within the LFCSP package may differ in available pins such as LDAC, VLOGIC, or RESET. Ensure compatibility with the required logic voltage levels (1.62 V to 5.5 V) for the target system interface.

Selection Notes

Select this component for applications requiring high relative accuracy in a compact footprint. The internal reference simplifies design by eliminating external components, while the 20 mA output drive allows direct interfacing with moderate loads. Consider the power-down mode for battery-operated devices, which reduces current consumption to 2 µA maximum.

Part Context

This part belongs to the AD5683R/AD5682R/AD5681R series, sharing a common datasheet and architectural foundation. It is distinguished by its 12-bit resolution, contrasting with the 14-bit AD5682R and 16-bit AD5683R. All members offer similar accuracy, low power, and small package options, differing primarily in resolution and specific pin configurations.

Replacement Considerations

Direct functional replacements within the same family include AD5682R (14-bit) and AD5683R (16-bit) if higher resolution is acceptable. For external reference requirements, the AD5683 model serves as a compatible alternative. Verify pin compatibility when substituting between MSOP and LFCSP packages.