AD5668ACPZ-3-RL7

Overview

The AD5668ACPZ-3-RL7 is an octal, 16-bit, buffered voltage-output digital-to-analog converter (DAC) from Analog Devices. It operates on a single 2.7 V to 5.5 V supply and features an on-chip 2.5 V reference with 5 ppm/°C temperature coefficient, providing a 5 V full-scale output range. The device includes a power-on reset circuit that defaults outputs to midscale upon startup. It supports a versatile 3-wire serial interface compatible with SPI, QSPI, Microwire, and DSP standards, with clock rates up to 50 MHz. Power consumption drops to 400 nA at 5 V in power-down mode.

Feature Summary

• Octal architecture with 16-bit resolution and rail-to-rail buffered voltage outputs
• Integrated 2.5 V internal reference with 5 ppm/°C stability for 5 V full-scale range
• Power-on reset function initializes all channels to midscale output
• Low power design with 400 nA current consumption in power-down mode at 5 V

Applications

• Process control systems
• Data acquisition systems
• Portable battery-powered instruments
• Programmable voltage and current sources

Procurement Notes

Verify the specific suffix '-3' confirms the inclusion of the 2.5 V internal reference and midscale power-on reset behavior. Confirm the 'ACPZ' designation corresponds to the 16-lead LFCSP package variant. Ensure compatibility with the required 2.7 V to 5.5 V supply voltage range for the target application environment.

Selection Notes

Select this component when eight independent 16-bit analog outputs are required in a compact footprint. The -3 suffix is critical for applications needing a 5 V output span without external references. Compare against AD5668-1 or AD5668-2 variants if zero-scale power-up or different reference voltages are preferred. Consider thermal resistance characteristics of the LFCSP package for high-density PCB layouts.

Part Context

This part belongs to the AD5628/AD5648/AD5668 family of denseDACs, which share pinouts and functional blocks but differ in resolution and reference options. The AD5668 represents the highest resolution (16-bit) in this series. The ACPZ package code indicates the 4 mm × 4 mm Lead Frame Chip Scale Package (LFCSP) form factor, distinct from the TSSOP or WLCSP options available for other family members.

Replacement Considerations

Direct replacements within the same family include AD5668BCPZ-3-RL7 (B Grade) for similar functionality with potentially different accuracy specifications. Other variants like AD5668ARUZ-3 offer the same electrical performance in a TSSOP package. Cross-family substitutes require verification of pin compatibility and reference voltage requirements.