AD5689RBCPZ-RL7

Overview

The AD5689RBCPZ-RL7 is a dual, 16-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 provides a user-selectable gain of 1 or 2 via the GAIN pin, allowing full-scale outputs of 2.5 V or 5 V respectively. It supports 50 MHz SPI communication with readback capabilities and includes per-channel power-down modes reducing current consumption to 4 μA at 3 V. Packaged in a 3 mm × 3 mm LFCSP.

Feature Summary

• High relative accuracy with ±2 LSB maximum INL at 16 bits
• Low drift 2.5 V internal reference: 2 ppm/°C typical
• User-selectable gain of 1 or 2 for 2.5 V or 5 V full-scale output
• Power-on reset circuit ensures zero scale or midscale startup

Applications

• Optical transceivers
• Base station power amplifiers
• Process control PLC I/O cards
• Industrial automation systems
• Data acquisition systems

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when sourcing. Confirm the B grade designation matches required accuracy specifications, as A grade variants exist with different performance limits. Ensure the LFCSP-16 package footprint aligns with PCB layout guidelines provided in the datasheet.

Selection Notes

Select this component for applications requiring high precision with minimal external components due to the integrated low-drift reference. Consider the 50 MHz SPI interface speed for high-throughput data acquisition. Verify that the 20 mA drive capability meets load requirements without exceeding thermal limits in the small LFCSP package.

Part Context

This part belongs to the AD5689R/AD5687R nanoDAC+ series, which offers dual-channel solutions in compact packages. It is designed to replace larger discrete DAC solutions while maintaining automotive qualification standards under AEC-Q100. The device complements other Analog Devices data converters by providing precise analog output generation.

Replacement Considerations

Direct functional substitutes within the same family include the AD5687R for 12-bit resolution requirements. Cross-model comparisons should account for differences in resolution, accuracy grades (A vs. B), and package options such as TSSOP versus LFCSP.