LTC2634IMSE-LMX10#TRPBF

Overview

The LTC2634IMSE-LMX10#TRPBF is a quad 10-bit voltage output digital-to-analog converter (DAC) in a 10-lead MSOP package. It features an integrated precision reference with a full-scale output of 2.5V and operates from a single 2.7V to 5.5V supply. The device includes rail-to-rail output buffers, guaranteed monotonicity over the -40°C to 85°C temperature range, and a power-on reset to mid-scale in external reference mode. Communication is handled via a 50MHz SPI/MICROWIRE compatible 3-wire serial interface.

Feature Summary

• Quad 10-bit DACs with integrated 10ppm/°C precision reference
• Rail-to-rail output buffers with ultralow crosstalk (2.4nV·s)
• Power-on reset to mid-scale in external reference mode
• 50MHz SPI/MICROWIRE compatible serial interface

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive systems

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a tape and reel packaging format containing 2,500 pieces. Confirm the IMSE designation corresponds to the Industrial temperature grade (-40°C to 85°C) and the MSE package type. Ensure compatibility with system requirements for mid-scale power-on reset behavior in external reference mode.

Selection Notes

Select this part for applications requiring four independent 10-bit channels with low drift and high accuracy. The L suffix specifies a 2.5V full-scale output suitable for 2.7V to 5.5V supplies. Choose this variant over H-grade parts if operation below 4.5V is required. Verify that the mid-scale power-on reset aligns with downstream circuit safety needs.

Part Context

This component belongs to the LTC2634 family of quad DACs, which also offers 12-bit and 8-bit resolutions. Variants include QFN packages and different temperature grades (C, I, H). The L-series provides a 2.5V full-scale output, while the H-series provides 4.096V. The IMSE suffix specifically denotes the Industrial temperature range and MSOP package.

Replacement Considerations

Direct replacements within the same family include LTC2634IMSE-LMI10#TRPBF (internal reference reset) or LTC2634IMSE-LZ10#TRPBF (zero-scale reset). For automotive applications, consider AEC-Q100 qualified variants with the #W suffix. Cross-family alternatives like the LTC2635 offer I2C interfaces instead of SPI.