AD5691RACPZ-1RL7

Overview

The AD5691RACPZ-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 an I2C serial interface and includes a selectable output span of 0 V to VREF or 0 V to 2 × VREF. Key electrical parameters include a maximum integral nonlinearity (INL) of ±1 LSB, a settling time of 5 µs, and a power consumption of 350 µA in normal mode. It is housed in an ultrasmall 2 mm × 2 mm, 8-lead LFCSP package.

Feature Summary

• 12-bit resolution with ±1 LSB INL and ±1 LSB DNL
• Internal 2.5 V reference with 2 ppm/°C typical temperature coefficient
• I2C serial interface with software-selectable gain (×1 or ×2)
• Low power: 350 µA normal mode, 2 µA power-down

Applications

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

Procurement Notes

Verify the specific suffix '-1' against the manufacturer's ordering guide to confirm the presence of the VLOGIC pin for 1.8 V logic compatibility. Ensure the package type matches the design requirement, as this part number corresponds to the 8-lead LFCSP variant. Cross-reference the revision level with the latest datasheet to confirm feature consistency.

Selection Notes

Select this component when a single-channel DAC with high relative accuracy and low power consumption is required. The internal reference eliminates the need for external components, simplifying the layout. Verify that the I2C bus speed and address configuration meet system requirements. Consider the output drive capability and capacitive load stability if driving heavy loads.

Part Context

This part belongs to the AD5691R series, which offers 12-bit performance. It shares architectural similarities with the AD5692R (14-bit) and AD5693R (16-bit). The 'ACPZ-1' suffix indicates the 8-lead LFCSP package with a VLOGIC pin option. It is part of the broader nanoDAC+ family designed for space-constrained applications.

Replacement Considerations

Direct functional substitutes within the same family include the AD5692R and AD5693R for higher resolution needs, provided the pinout and package are compatible. For pin-compatible replacements without the VLOGIC pin, check the standard AD5691RBCPZ variants. Verify that any substitute maintains the I2C interface and package dimensions.