AD5668BCPZ-2500RL7

Overview

The AD5668BCPZ-2500RL7 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 internal 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. Key specifications include ±1 LSB differential nonlinearity, rail-to-rail output swing, and power-down modes reducing current consumption to 400 nA at 5 V.

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 DAC channels to midscale
• Low power consumption with software-selectable power-down modes down to 400 nA

Applications

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

Procurement Notes

Verify the specific suffix '2500' against official documentation to confirm reel quantity or tape-and-reel specifications. Ensure compatibility with the 16-lead LFCSP package dimensions and thermal requirements during integration. Confirm that the internal reference configuration matches the required output voltage span for the target application.

Selection Notes

Select this component when eight independent 16-bit channels are required in a compact footprint. The internal 2.5 V reference simplifies design by eliminating external precision references, provided the 5 V output span meets system needs. Consider the LFCSP package for space-constrained designs, ensuring adequate PCB thermal management due to the exposed paddle requirement.

Part Context

This part belongs to the AD5628/AD5648/AD5668 family of denseDACs. The AD5668 variant specifically offers 16-bit resolution, distinguishing it from the 12-bit AD5628 and 14-bit AD5648. All members share pin-out compatibility and functional blocks, allowing for flexible scaling within the same product line based on resolution requirements.

Replacement Considerations

Pin-compatible alternatives within the same family include the AD5648 (14-bit) and AD5628 (12-bit). Cross-vendor replacements such as the MS5268 offer similar functionality but require verification of interface timing and reference characteristics.