AD5668ACPZ-2-RL7

Overview

The AD5668ACPZ-2-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 zero scale or midscale. It supports a versatile 3-wire serial interface compatible with SPI, QSPI, Microwire, and DSP standards, operating at clock rates up to 50 MHz. The part is housed in a 16-lead LFCSP package.

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-down mode reduces current consumption to 400 nA at 5 V
• Hardware LDAC and asynchronous CLR functions for simultaneous channel updates

Applications

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

Procurement Notes

Verify the specific suffix '-2' confirms the inclusion of the 2.5 V internal reference and 5 V output range. Confirm the 'CPZ' designation corresponds to the 16-lead LFCSP package type. Ensure the 'RL7' suffix matches the required reel packaging quantity for production integration.

Selection Notes

Select this component when eight independent 16-bit channels are required in a compact footprint. The internal 2.5 V reference eliminates the need for external precision references if a 5 V span is sufficient. Verify compatibility with the host microcontroller's serial interface timing requirements, specifically the 50 MHz SCLK limit.

Part Context

This part belongs to the denseDAC family, which offers pin-compatible variants including the 12-bit AD5628 and 14-bit AD5648. The AD5668 provides the highest resolution in this series. The 'ACPZ' code indicates the A grade performance level and the LFCSP-16 package, distinguishing it from TSSOP or WLCSP options available in the broader product line.

Replacement Considerations

The AD5668BCPZ-2-RL7 is a B-grade version of the same device with identical functionality but potentially different accuracy specifications. Other family members like the AD5668ARUZ-2 offer the same electrical performance in a TSSOP-16 package.