AD5666BRUZ-2

Overview

The AD5666BRUZ-2 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 integrated 2.5 V reference with 5 ppm/°C temperature coefficient, enabling a full-scale output of 5 V. The device guarantees monotonicity by design and includes a power-on reset circuit for configurable initial states. It utilizes a versatile 3-wire serial interface compatible with standard SPI, QSPI, Microwire, and DSP standards, supporting clock rates up to 50 MHz.

Feature Summary

• Quad 16-bit resolution with rail-to-rail buffered voltage outputs
• Integrated 2.5 V internal reference with ±5 ppm/°C stability
• Power consumption reduces to 400 nA at 5 V in power-down mode
• Hardware LDAC for simultaneous multi-channel updates
• Asynchronous CLR function to programmable codes (0 V, midscale, or full scale)

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 '2' confirms the inclusion of the 2.5 V internal reference, as this distinguishes it from other variants like the AD5666BRUZ-1 which uses a 1.25 V reference. Confirm package integrity for the 14-lead TSSOP form factor. Ensure compatibility with the required operating temperature range of -40°C to +105°C for industrial applications.

Selection Notes

Select the AD5666BRUZ-2 when a 5 V full-scale output range is required without external reference components. Choose this part over the AD5666BRUZ-1 if the application demands higher output swing. Consider the 14-lead TSSOP package constraints for PCB layout. Verify that the 50 MHz serial clock speed meets the system timing requirements.

Part Context

This component belongs to the AD5666 family of nanoDACs. The 'BRUZ' designation indicates the B grade performance level and RUZ package code. The '-2' suffix specifically denotes the variant with the 2.5 V internal reference. Other family members include the octal AD5668 and the lower channel count variants.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.