AD5678ARUZ-2REEL7

Overview

The AD5678ARUZ-2REEL7 is an octal digital-to-analog converter featuring four 12-bit and four 16-bit channels in a single package. It operates on a 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 supports a versatile 3-wire serial interface compatible with SPI, QSPI, Microwire, and DSP standards at clock rates up to 50 MHz. Key features include power-on reset to zero scale, simultaneous LDAC updates, asynchronous CLR functionality, and low-power shutdown modes consuming as little as 200 nA.

Feature Summary

• Octal architecture with four 12-bit and four 16-bit buffered voltage-output DACs
• Integrated 2.5 V precision reference (5 ppm/°C) for 5 V full-scale output
• Versatile 3-wire serial interface supporting up to 50 MHz clock rates
• Power-down modes reducing current consumption to 400 nA @ 5 V

Applications

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

Procurement Notes

Verify the specific suffix 'REEL7' indicates tape-and-reel packaging containing 1000 units. Confirm the '-2' designation corresponds to the internal 2.5 V reference variant. Ensure the TSSOP-16 package matches the target PCB footprint. Check for RoHS compliance status in the latest manufacturer documentation before finalizing procurement.

Selection Notes

Select this component when multiple mixed-resolution DAC outputs are required in a compact form factor. The -2 suffix provides a fixed 5 V full-scale range via the internal reference; use external references if higher precision or different ranges are needed. Verify that the 16-bit channels meet the system's linearity requirements, noting the ±1 LSB DNL specification ensures monotonicity across the operating temperature range.

Part Context

This part belongs to the AD5678 family of low-power octal DACs. The 'RUZ' suffix denotes the 16-lead TSSOP package. The 'REEL7' suffix specifies the reel packaging format. The '-2' variant distinguishes it from the '-1' version by providing a 2.5 V internal reference instead of 1.25 V. It shares the same pinout and interface logic as other variants in the series.

Replacement Considerations

The AD5678ARUZ-2 is functionally interchangeable with the AD5678ARUZ-2REEL7, differing only in packaging (tube vs. reel). Other AD5678 variants like the AD5679 or AD5677 offer similar interfaces but may differ in resolution or channel count. Direct substitutes require matching the 16-lead TSSOP package and 2.7 V–5.5 V supply range.