AD5678ARUZ-2

Overview

The AD5678ARUZ-2 is an octal digital-to-analog converter featuring four 12-bit and four 16-bit channels in a single package. It operates on a single 2.7 V to 5.5 V supply and includes an on-chip 2.5 V reference with 5 ppm/°C temperature coefficient, yielding a 5 V full-scale output. The device guarantees monotonicity by design and incorporates a power-on reset circuit ensuring outputs initialize to 0 V. It supports serial interfaces including SPI, QSPI, Microwire, and DSP standards with clock rates up to 50 MHz. Power consumption reduces to 400 nA at 5 V in power-down mode.

Feature Summary

• Octal architecture combining four 12-bit and four 16-bit buffered voltage-output DACs
• Integrated 2.5 V precision reference with 5 ppm/°C temperature coefficient
• Power-on reset function forces all outputs to 0 V upon initialization
• Versatile 3-wire serial interface compatible with standard DSP protocols

Applications

• Process control systems requiring multi-channel signal generation
• Data acquisition systems for channel expansion
• Portable battery-powered instruments due to low power characteristics
• Programmable voltage and current sources
• Digital gain and offset adjustment circuits

Procurement Notes

Verify the specific suffix '-2' confirms the inclusion of the internal 2.5 V reference. Confirm the package variant matches the required pin count (14-lead or 16-lead TSSOP) as the base part number covers both configurations. Ensure the grade (A or B) meets the accuracy requirements for relative accuracy and linearity specifications.

Selection Notes

Select this component when multiple analog outputs are needed from a single IC footprint. The AD5678-2 is appropriate for applications requiring a 5 V full-scale range without external references. Consider the 16-lead TSSOP if LDAC and CLR hardware control pins are required, whereas the 14-lead version omits these specific controls.

Part Context

The AD5678 belongs to Analog Devices' nanoDAC family, designed for low-power, high-density data conversion. The 'ARUZ' designation indicates an industrial temperature range (-40°C to +105°C) and TSSOP packaging. The '-2' suffix specifically denotes the version equipped with the internal 2.5 V reference, distinguishing it from the '-1' variant which uses a 1.25 V reference.

Replacement Considerations

Public confirmed substitute part numbers: None.