LTC2637IMS-HMX10#TRPBF

Overview

The LTC2637IMS-HMX10#TRPBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features an integrated precision reference with a full-scale output of 4.096V and a temperature coefficient of 10ppm/°C. 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 when using an external reference.

Feature Summary

• Octal architecture providing eight independent 10-bit DAC channels in a single package.
• Integrated high-accuracy internal reference yielding a 4.096V full-scale output with 10ppm/°C drift.
• I2C-compatible serial interface allowing operation in both standard (100kHz) and fast (400kHz) modes.
• Power-on reset function set to mid-scale for external reference configurations.

Applications

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

Procurement Notes

Verify the specific suffix HMX10#TRPBF against official manufacturer documentation to confirm the external reference power-on reset behavior and tape-and-reel packaging specifications. Ensure the design supports the required 4.5V to 5.5V supply range for the H-grade variant.

Selection Notes

Select this component when multiple low-drift voltage outputs are required within a compact footprint. The H-grade designation indicates suitability for automotive applications operating up to 125°C. Confirm that the system utilizes an external reference voltage, as the MX suffix dictates a mid-scale reset state under those conditions.

Part Context

This part belongs to the LTC2637 family, which offers 8-bit, 10-bit, and 12-bit resolution options. The IMS suffix identifies the 16-lead MSOP package, while the H grade specifies the extended temperature range suitable for automotive environments. Other variants include L-grade for lower voltage operation and different reset configurations such as Z for zero-scale initialization.

Replacement Considerations

Direct replacements within the same family include LTC2637IMS-HMI10#TRPBF, which shares identical electrical characteristics but resets to mid-scale in internal reference mode rather than external reference mode. Verify pin compatibility and software register mapping before substitution.