AD5686RACPZ-RL7

Overview

The AD5686RACPZ-RL7 is a quad, 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 supports SPI interfaces up to 50 MHz with readback or daisy-chain capabilities. Key electrical parameters include a maximum integral nonlinearity (INL) of ±2 LSB, a settling time of 5 µs, and a total unadjusted error (TUE) of ±0.1% of full-scale range. It offers user-selectable gain of 1 or 2 via the GAIN pin.

Feature Summary

• Quad 16-bit resolution with high relative accuracy (±2 LSB max INL)
• Integrated low-drift 2.5 V reference (2 ppm/°C typical)
• SPI interface supporting 50 MHz clock rates with readback
• Rail-to-rail buffered outputs with 20 mA drive capability

Applications

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

Procurement Notes

Verify the specific suffix 'ACPZ' against the manufacturer's ordering guide to confirm package type and temperature grade. Ensure compatibility with system requirements for the LFCSP-16 package and operating temperature range of -40°C to +105°C. Confirm that the internal reference configuration meets the application's precision needs without external components.

Selection Notes

Select this component when four independent 16-bit voltage outputs are required in a compact form factor. The internal reference simplifies design by reducing external component count. Consider the 2 ppm/°C reference drift for applications requiring high thermal stability. Verify that the 50 MHz SPI speed aligns with the host microcontroller's capabilities.

Part Context

This part belongs to the AD5686R/AD5685R/AD5684R family, which shares functional similarities but differs in resolution (16-bit, 14-bit, and 12-bit respectively). All members feature the same nanoDAC+ architecture, SPI interface, and package options. The AD5686R specifically provides the highest resolution within this triple-tiered series.

Replacement Considerations

Direct replacements within the same family include the AD5685R (14-bit) and AD5684R (12-bit) if lower resolution is acceptable. For external reference variants, consider the AD5686. Ensure pinout and software command sets remain compatible during substitution.