AD5675RACPZ-RL

Overview

The AD5675RACPZ-RL is an octal, 16-bit buffered voltage output digital-to-analog converter (DAC) from Analog Devices. It features a 2.5 V internal reference with a typical drift of 2 ppm/°C and operates on a single 2.7 V to 5.5 V supply. The device incorporates a 400 kHz I²C-compatible serial interface and user-selectable gain of 1 or 2, providing full-scale outputs of 2.5 V or 5 V respectively. Key performance metrics include a maximum INL of ±3 LSB, a settling time of 5 µs, and a power-down current of 1 µA. It is housed in a 20-lead LFCSP package.

Feature Summary

• Octal 16-bit resolution with high relative accuracy (INL: ±3 LSB max)
• Integrated 2.5 V low-drift reference (2 ppm/°C typical)
• User-selectable gain (×1 or ×2) for 2.5 V or 5 V full-scale output
• 400 kHz I²C serial interface with 1.8 V logic compatibility

Applications

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

Procurement Notes

Verify the specific grade (A or B) required for your application, as specifications such as INL and offset error vary between grades. Confirm that the LFCSP-20 package aligns with your PCB footprint requirements. Ensure the I²C address configuration via A0 and A1 pins matches your system topology to prevent bus conflicts.

Selection Notes

Select this component when multiple synchronized analog outputs are needed with high precision. The integrated reference simplifies design by reducing external component count. Consider the gain setting; tying GAIN to VLOGIC doubles the output span but requires VDD to be at least VREF + 1.5 V. Verify thermal dissipation capabilities if operating near the upper temperature limits.

Part Context

This part belongs to the nanoDAC+ family, designed for low-power, high-accuracy applications. It shares architectural similarities with the AD5671R (12-bit) and AD5676R (SPI interface). The 'AC' suffix indicates the LFCSP package variant, while 'RL' denotes reel packaging. It serves as a multi-channel solution for systems requiring precise voltage generation without complex external buffering.

Replacement Considerations

For SPI interface alternatives, consider the AD5676R series. For lower resolution needs, the AD5671R offers 12-bit performance. Ensure any substitute maintains the 20-lead LFCSP footprint and compatible I²C timing characteristics if direct pin replacement is required.