AD5678BRUZ-1

Overview

The AD5678BRUZ-1 is a low-power, octal buffered voltage-output digital-to-analog converter (DAC) from Analog Devices. It integrates four 12-bit DACs and four 16-bit DACs within a single package. The device operates on a single 2.7 V to 5.5 V supply and features an on-chip 1.25 V reference with a temperature coefficient of 5 ppm/°C, enabling a full-scale output of 2.5 V. Key specifications include a settling time of 6 µs, guaranteed monotonicity by design, and power-down current consumption as low as 400 nA at 5 V. It utilizes a versatile 3-wire serial interface compatible with standard SPI, QSPI, Microwire, and DSP standards.

Feature Summary

• Octal architecture combining four 12-bit and four 16-bit DAC channels
• On-chip 1.25 V precision reference with 5 ppm/°C temperature coefficient
• Rail-to-rail buffered voltage outputs with 6 µs settling time
• Low power consumption with 400 nA power-down mode at 5 V

Applications

• Process control systems
• Data acquisition systems
• Portable battery-powered instruments
• Digital gain and offset adjustment circuits
• Programmable voltage and current sources

Procurement Notes

Verify the specific suffix 'RUZ' corresponds to the TSSOP package and '1' indicates the 1.25 V internal reference variant. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors prior to procurement. Ensure the ordering code matches the required pin configuration for the target PCB layout.

Selection Notes

Select this component when an octal DAC solution is required with mixed resolution needs. The AD5678-1 variant is appropriate for applications requiring a 2.5 V full-scale output range derived from the internal 1.25 V reference. Consider the 16-lead TSSOP package for designs requiring LDAC and CLR pins, versus the 14-lead version if these functions are managed differently.

Part Context

The AD5678 belongs to the nanoDAC family, designed for low-power, high-density data conversion applications. It serves as a cost-effective alternative to multiple discrete DACs, consolidating eight channels into a compact footprint. The device is part of a broader series including variants with different reference voltages and resolutions.

Replacement Considerations

Direct replacements within the same family include the AD5678ARUZ-1 and AD5678BRUZ-2, which share the same octal architecture but differ in internal reference voltage (2.5 V vs. 1.25 V). Verify pin compatibility and reference requirements when substituting.