LTC2637HMS-LMI10#TRPBF

Overview

The LTC2637HMS-LMI10#TRPBF is an octal, 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a temperature coefficient of 10ppm/°C and a full-scale output of 4.096V. The device operates on a single supply voltage ranging from 4.5V to 5.5V and communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It includes rail-to-rail output buffers, double-buffered data latches, and a power-on reset circuit configured to initialize outputs to mid-scale in internal reference mode.

Feature Summary

• Octal architecture with 8 independent 10-bit DAC channels
• Integrated 4.096V precision reference with ±10ppm/°C drift
• Ultralow DAC-to-DAC crosstalk (<3nV•s typical)
• Power-on reset to mid-scale in internal reference mode

Applications

• Process control and industrial automation systems
• Automatic test equipment requiring multi-channel signal generation
• Portable battery-powered instrumentation
• Automotive electronic control units

Procurement Notes

Verify the H-grade automotive temperature rating (-40°C to 125°C) and MSOP-16 package configuration against design requirements. Confirm that the specific LMI10 suffix corresponds to the intended mid-scale power-on reset behavior for internal reference applications. Ensure supply voltage constraints between 4.5V and 5.5V are strictly maintained during operation.

Selection Notes

Select this component when eight isolated voltage outputs are required within a compact footprint. The H-grade variant is suitable for environments exceeding standard industrial temperatures. Compare settling times and noise specifications against system bandwidth needs. Consider the external reference option if higher accuracy or different voltage ranges are necessary compared to the fixed internal reference.

Part Context

This part belongs to the LTC2637 family, which offers 12-, 10-, and 8-bit resolutions in both DFN and MSOP packages. The 'H' designation indicates the extended temperature grade, while 'MS' specifies the 16-lead MSOP housing. The '#TRPBF' suffix denotes tape and reel packaging with lead-free composition, distinguishing it from tube-packaged equivalents.

Replacement Considerations

Direct substitutes include other LTC2637 variants with different resolutions or reset behaviors, such as LTC2637HMS-LZ10#TRPBF for zero-scale reset. Cross-family replacements like the LTC2635 offer quad-channel configurations but may differ in pinout or performance metrics.