AD5669RARUZ-1

Overview

The AD5669RARUZ-1 is an octal, 16-bit buffered voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a 2.7 V to 5.5 V supply range and integrates a 1.25 V, 5 ppm/°C on-chip reference, providing a 2.5 V full-scale output range. The device supports I2C-compatible serial interfaces at standard (100 kHz) and fast (400 kHz) modes. Key specifications include ±8 LSB relative accuracy (A Grade), guaranteed monotonicity by design, and power-down current consumption of 400 nA at 5 V. It incorporates a power-on reset circuit for zero-scale or midscale initialization.

Feature Summary

• Octal architecture with eight independent 16-bit DAC channels in a compact package.
• Integrated 1.25 V precision reference with 5 ppm/°C temperature coefficient.
• I2C-compatible interface supporting standard and fast mode clock frequencies.
• Power-down capability reducing current draw to 400 nA at 5 V.

Applications

• Process control systems
• Data acquisition systems
• Portable battery-powered instruments
• Digital gain and offset adjustment circuits
• Programmable voltage and current sources

Procurement Notes

Verify the specific suffix 'R' indicates the LFCSP package and 'UZ' denotes lead-free status. Confirm the '-1' suffix corresponds to the 1.25 V internal reference configuration. Ensure compatibility with the required operating voltage range of 2.7 V to 5.5 V for the selected grade.

Selection Notes

Select this component when high channel density is required within a limited footprint. The integrated 1.25 V reference simplifies design by eliminating external reference components. Verify that the I2C address configuration via the A0 pin meets system addressing requirements. Consider the ±8 LSB accuracy if higher precision is needed, as other grades offer tighter tolerances.

Part Context

This part belongs to the denseDAC family, designed for space-constrained applications requiring multiple outputs. It shares functional similarities with the AD5629R but offers higher 16-bit resolution. The device is suitable for replacing older multi-channel DAC solutions where power efficiency and board real estate are critical constraints.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.