LTC2634IMSE-LMI8#TRPBF

Overview

The LTC2634IMSE-LMI8#TRPBF is a quad 8-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 internal reference mode. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface with clock rates up to 50MHz.

Feature Summary

• Quad 8-bit DACs with integrated 2.5V full-scale precision reference
• Rail-to-rail output buffers with ultralow crosstalk (2.4nV•s)
• SPI/MICROWIRE compatible 3-wire serial interface operating up to 50MHz
• Power-on reset to mid-scale in internal reference mode

Applications

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

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 8-bit resolution and 2.5V full-scale output before procurement.

Selection Notes

Select this part for applications requiring four independent 8-bit channels with low power consumption and high accuracy. The L suffix denotes a 2.5V full-scale output suitable for 2.7V to 5.5V supplies. The MI suffix configures the power-on reset to mid-scale in internal reference mode. Verify that the 10-lead MSOP package fits the PCB layout constraints compared to the 16-lead QFN option.

Part Context

This component belongs to the LTC2634 family of quad DACs, which also offers 10-bit and 12-bit resolutions. Variants include the LTC2634-H series for 4.096V full-scale outputs and different power-on reset configurations such as zero-scale or external reference mid-scale. The IMSE-LMI8 variant specifically targets industrial environments requiring 8-bit precision.

Replacement Considerations

Direct replacements within the same family include LTC2634IMSE-LMX8#TRPBF (external reference reset) or LTC2634IMSE-LZ8#TRPBF (zero-scale reset). For higher resolution needs, consider LTC2634IMSE-LMI10#TRPBF or LTC2634IMSE-LMI12#TRPBF. Cross-family alternatives like the LTC2635 offer I2C interfaces instead of SPI.