AD5666ARUZ-2REEL7

Overview

The AD5666ARUZ-2REEL7 is a low-power, quad, 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 on-chip 2.5 V reference with a maximum temperature coefficient of 5 ppm/°C, yielding a full-scale output of 5 V. The device incorporates a power-on reset circuit for zero-scale or midscale initialization, three software-selectable power-down modes reducing current to 400 nA at 5 V, and a versatile 3-wire serial interface supporting clock rates up to 50 MHz. It is housed in a 14-lead TSSOP package.

Feature Summary

• Quad 16-bit resolution with rail-to-rail buffered voltage outputs
• On-chip 2.5 V precision reference with ±5 ppm/°C temperature coefficient
• Power consumption reduced to 400 nA at 5 V in power-down mode
• Hardware LDAC for simultaneous multi-channel updates and asynchronous CLR function

Applications

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

Procurement Notes

Verify the specific suffix 'REEL7' corresponds to tape-and-reel packaging when sourcing. Confirm that the '-2' designation indicates the internal 2.5 V reference variant, as opposed to the '-1' variant which provides a 1.25 V reference. Ensure compatibility with the 14-lead TSSOP footprint during procurement planning.

Selection Notes

Select this component for applications requiring four independent 16-bit channels with high accuracy. The internal 2.5 V reference simplifies design by eliminating external reference requirements, provided the 5 V full-scale range meets system needs. Consider the 50 MHz serial interface speed for high-throughput data acquisition scenarios.

Part Context

This part belongs to the AD5666 family of nanoDACs. The 'A' grade specifies tighter linearity specifications compared to the 'B' grade. The 'RUZ' indicates the 14-lead TSSOP package type. The 'REEL7' suffix denotes the specific reel packaging configuration used for automated assembly.

Replacement Considerations

The AD5666BRUZ-2 is a lower-cost alternative within the same family but offers relaxed linearity specifications (Grade B). For I2C interface requirements, the AD5696 series serves as a functional replacement with different communication protocols.