LTC2637CMS-LMX8#TRPBF

Overview

The LTC2637CMS-LMX8#TRPBF is an octal 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a 16-lead MSOP package and operates on a single 2.7V to 5.5V supply. The device includes double-buffered data latches and communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It incorporates a power-on reset circuit configured to reset to mid-scale in external reference mode upon power-up.

Feature Summary

• Octal 8-bit resolution with rail-to-rail output buffers
• I2C-compatible serial interface with selectable internal or external reference
• Power-on reset to mid-scale in external reference mode
• Double-buffered data latches for glitch-free updates

Applications

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

Procurement Notes

Verify the specific ordering suffix LMX8 against official documentation to confirm the mid-scale reset behavior in external reference mode and the tape-and-reel packaging configuration. Ensure compatibility with the required I2C address settings using the CA0 pin.

Selection Notes

Select this part when eight independent 8-bit DAC channels are required in a compact surface-mount package. The LMX suffix indicates a specific power-on reset state suitable for designs requiring mid-scale initialization during external reference operation. Verify that the 2.7V to 5.5V supply range meets system requirements.

Part Context

This component belongs to the LTC2637 family of octal DACs, which also offers 10-bit and 12-bit resolutions. Variants include the LTC2637-L (2.5V full-scale, 2.7V–5.5V supply) and LTC2637-H (4.096V full-scale, 4.5V–5.5V supply). The CMS designation indicates the commercial temperature grade and MSOP package type.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.