AD5668BCPZ-1-RL7

Overview

The AD5668BCPZ-1-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 a 1.25 V internal reference with 5 ppm/°C temperature coefficient, providing a 2.5 V full-scale output range. The device includes a power-on reset circuit that defaults outputs to zero scale. 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, ±16 LSB integral nonlinearity, and rail-to-rail output swing.

Feature Summary

• Octal architecture with eight independent 16-bit DAC channels
• Integrated 1.25 V precision reference with 5 ppm/°C drift
• Power-down mode reduces current consumption to 400 nA at 5 V
• Hardware LDAC and asynchronous CLR functions for simultaneous updates

Applications

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

Procurement Notes

Verify the specific suffix '1' confirms the 1.25 V internal reference configuration. Confirm the 'CPZ' designation corresponds to the 16-lead LFCSP package type. Ensure compatibility with the required operating temperature range of -40°C to +105°C for industrial applications.

Selection Notes

Select this component when multiple isolated analog outputs are required in a compact footprint. The 16-bit resolution suits high-precision applications. Consider the 1.25 V internal reference limit; if a 5 V full-scale range is needed, select the AD5668BCPZ-2 variant instead.

Part Context

This part belongs to the denseDAC family, designed for low-power, space-constrained environments. It shares pinouts and functionality with the AD5628 (12-bit) and AD5648 (14-bit), allowing for design flexibility across resolution requirements while maintaining board layout consistency.

Replacement Considerations

The AD5668BRUZ-1 is a direct functional replacement using a TSSOP-16 package. For WLCSP packaging, the AD5668BCBZ-1 is available. Verify thermal resistance differences between LFCSP and alternative packages during substitution.