LTC2637CMS-HMX10#TRPBF

Overview

The LTC2637CMS-HMX10#TRPBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a 4.096V full-scale internal reference with a 10ppm/°C temperature coefficient, operating on a 4.5V to 5.5V supply. The device includes rail-to-rail output buffers and double-buffered data latches for ultralow crosstalk (<3nV•s). Communication occurs via a 2-wire I2C-compatible interface supporting standard (100kHz) and fast (400kHz) modes. Power-on reset defaults to mid-scale in external reference mode. It is housed in a 16-lead MSOP package.

Feature Summary

• Octal 10-bit resolution with guaranteed monotonicity over –40°C to 125°C
• Integrated 4.096V precision reference with ±10ppm/°C drift
• Ultralow DAC-to-DAC crosstalk of <3nV•s
• Power-on reset configured to mid-scale for external reference operation

Applications

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

Procurement Notes

Verify the H-grade automotive temperature rating (-40°C to 125°C) and MX suffix configuration against design requirements. Confirm the 16-lead MSOP package footprint matches the PCB layout. Ensure the power supply range accommodates the 4.5V minimum requirement for the H-series variant.

Selection Notes

Select this part when eight independent voltage outputs are required with high channel isolation. The H-grade version supports higher supply voltages up to 5.5V compared to the L-grade. Verify that the application requires mid-scale initialization during power-up rather than zero-scale or other reset states.

Part Context

This component belongs to the LTC2637 family of octal DACs, which also offers 8-bit and 12-bit resolutions. Variants include the LTC2637-L for lower voltage applications and different reset configurations such as Z (zero-scale) or MI (mid-scale internal reference). The MSOP package provides a compact surface-mount solution for space-constrained designs.

Replacement Considerations

Direct substitutes within the same family include LTC2637IMS-HMX10#TRPBF (same specs, tube packaging) or LTC2637HMS-HMX10#TRPBF (automotive grade, tape and reel). Cross-family replacements require verification of pin compatibility and electrical specifications.