LTC2635HMSE-LMX8#PBF

Overview

The LTC2635HMSE-LMX8#PBF 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 a temperature coefficient of 10ppm/°C. The device operates from a single 2.7V to 5.5V supply and communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It includes rail-to-rail output buffers, guaranteed monotonicity over the –40°C to 125°C automotive temperature range, and a power-on reset circuit configured to reset outputs to mid-scale when using an external reference.

Feature Summary

• Quad 8-Bit Resolution with Rail-to-Rail Output Buffers
• Integrated Precision Reference: 2.5V Full-Scale, 10ppm/°C Drift
• Automotive Temperature Grade: –40°C to 125°C
• Power-On Reset to Mid-Scale (External Reference Mode)
• I2C Interface with Standard (100kHz) and Fast (400kHz) Modes

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Power Supply Margining
• Portable Equipment
• Automotive Systems

Procurement Notes

Verify the specific ordering suffix LMX8 corresponds to the mid-scale reset configuration for external reference mode as defined in the Analog Devices selection guide. Confirm the MSE package designation matches the 10-lead MSOP physical footprint required for the design. Ensure the H-grade specification aligns with the intended operating temperature range requirements.

Selection Notes

Select this component for applications requiring four independent 8-bit DAC channels with low drift and automotive reliability. The LMX8 suffix dictates a mid-scale power-on reset behavior specifically when an external reference is utilized; internal reference modes utilize different reset options. Verify that the system supply voltage falls within the 2.7V to 5.5V range compatible with the LTC2635-L series specifications.

Part Context

This part belongs to the LTC2635 family of quad DACs available in 12-, 10-, and 8-bit resolutions. The 'H' grade indicates qualification for the automotive temperature range (-40°C to 125°C), while the 'L' designation specifies the 2.5V full-scale internal reference architecture. The MSE suffix identifies the 10-lead MSOP package option, distinct from the 16-pin QFN (UD) package.

Replacement Considerations

Direct substitutes within the same family include LTC2635HMSE-LZ8#PBF (zero-scale reset) or LTC2635HMSE-LMI8#PBF (mid-scale reset with internal reference). Cross-family replacements require verification of pin compatibility and electrical parameter alignment.