AD5668BCPZ-1500RL7

Overview

The AD5668BCPZ-1500RL7 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 a 1.25 V internal reference with 5 ppm/°C temperature coefficient, providing a 2.5 V full-scale output range. The device guarantees monotonicity by design and includes a power-on reset circuit that initializes outputs to zero scale. It supports a versatile 3-wire serial interface compatible with SPI, QSPI, Microwire, and DSP standards, operating at clock rates up to 50 MHz. Power consumption is minimized via three selectable power-down modes, reducing current to 400 nA at 5 V.

Feature Summary

• Octal architecture with 16-bit resolution and rail-to-rail buffered voltage outputs
• Integrated 1.25 V reference with 5 ppm/°C stability for 2.5 V full-scale range
• Power-on reset ensures outputs initialize to 0 V upon startup
• Low power consumption with 400 nA current draw 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 '1500RL7' against official manufacturer documentation to confirm packaging quantity and reel specifications. Ensure compatibility with the LFCSP-16 package requirements and thermal management guidelines specified in the datasheet.

Selection Notes

Select this component when eight independent 16-bit channels are required within a compact footprint. The internal 1.25 V reference suits applications needing a 2.5 V output span without external precision references. Verify that the system logic levels align with the 2.7 V to 5.5 V operating range and that the 50 MHz serial clock speed meets data throughput requirements.

Part Context

This part belongs to the AD5628/AD5648/AD5668 family of denseDACs. The AD5668 variant specifically provides 16-bit resolution, distinguishing it from the 12-bit AD5628 and 14-bit AD5648. All members share pin-out compatibility and core functionality, differing primarily in resolution and associated linearity specifications.

Replacement Considerations

The MS5268 is documented as a pin-compatible alternative offering similar octal 16-bit performance. Verify electrical parameter alignment, particularly regarding reference accuracy and power-down currents, before substitution.