AD5668BCBZ-3-RL7

Overview

The AD5668BCBZ-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 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. 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
• Internal 2.5 V reference with 5 ppm/°C stability for 5 V full-scale range
• Power-on reset ensures outputs initialize to midscale
• Low power consumption of 400 nA at 5 V in power-down mode

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 internal 2.5 V reference configuration required for 5 V output spans. Confirm the 'RL7' designation corresponds to the reel packaging format intended for automated assembly processes. Ensure compatibility with the target PCB footprint for the specified package type.

Selection Notes

Select this component when eight independent 16-bit channels are required within a single IC. The internal 2.5 V reference eliminates the need for external precision references if a 5 V output swing is sufficient. Consider the midscale power-on reset behavior; if zero-scale initialization is mandatory, an external reference or additional circuitry may be needed.

Part Context

This part belongs to the AD5628/AD5648/AD5668 denseDAC family, which offers pin-compatible options for 12-bit, 14-bit, and 16-bit resolutions. The AD5668 represents the highest resolution variant in this series, designed for applications requiring precise multi-channel analog signal generation.

Replacement Considerations

The AD5668ARUZ-2 serves as a functional alternative within the same family but utilizes an internal 2.5 V reference configured for a different default behavior or package variation. Verify pinout compatibility and software register settings when substituting.