LTC2634IUD-HMI10#PBF

Overview

The LTC2634IUD-HMI10#PBF is a quad 10-bit voltage output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 4.096V and operates from a single 4.5V to 5.5V supply. The device includes rail-to-rail output buffers, guaranteed monotonicity over the –40°C to 85°C industrial temperature range, and communicates via a 50MHz SPI/MICROWIRE compatible 3-wire serial interface. Power-on reset defaults to mid-scale in internal reference mode.

Feature Summary

• Quad 10-bit DACs with integrated 4.096V precision reference
• Rail-to-rail output buffers with guaranteed monotonicity
• 50MHz SPI/MICROWIRE compatible serial interface
• Power-on reset to mid-scale in internal reference mode

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive

Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging. Confirm the H-grade designation corresponds to the required 4.5V minimum supply voltage and automotive temperature range if applicable. Ensure the I-grade industrial temperature rating (-40°C to 85°C) meets system requirements. Check for AEC-Q100 qualification if automotive use is intended, noting that this specific part number does not carry the #W automotive suffix.

Selection Notes

Select this model when a 4.096V full-scale output is required with an internal reference. The H-suffix denotes operation from 4.5V to 5.5V, distinguishing it from the L-series which supports 2.7V to 5.5V but outputs 2.5V. The MI suffix ensures power-on reset to mid-scale in internal reference mode. Choose the UD package for the 16-lead QFN form factor which includes additional control pins like CLR and LDAC.

Part Context

This component belongs to the LTC2634 family of quad DACs available in 12-, 10-, and 8-bit resolutions. The IUD variant specifically combines the Industrial temperature grade (I), 16-lead QFN package (UD), and Mid-Scale Internal Reset configuration (MI). It shares architectural similarities with the LTC2635, though the latter utilizes an I2C interface instead of SPI.

Replacement Considerations

LTC2634IUD-LMI10#PBF: Identical electrical performance but resets to mid-scale in external reference mode upon power-up.