LTC2635CMSE-LMX8#TRPBF

Overview

The LTC2635CMSE-LMX8#TRPBF is a quad 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 2.5V and a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 2.7V to 5.5V. It includes rail-to-rail output buffers and is guaranteed monotonic over the commercial temperature range of 0°C to 70°C. Communication is handled via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. The part incorporates a power-on reset circuit configured to reset DAC outputs to mid-scale when using an external reference.

Feature Summary

• Quad 8-bit resolution with ±0.5 LSB maximum INL error
• Integrated 2.5V full-scale reference with 10ppm/°C drift
• I²C interface with selectable slave addresses via CA0-CA2 pins
• Power-on reset to mid-scale in external reference mode

Applications

• Mobile communications
• Process control and industrial automation
• Portable equipment

Procurement Notes

Verify that the MSE package designation corresponds to the 10-lead MSOP form factor required for the specific PCB layout. Confirm the LMX suffix indicates the correct mid-scale reset behavior for external reference applications. Ensure the TRPBF suffix matches the tape and reel packaging specifications needed for automated assembly processes.

Selection Notes

Select this component when four independent 8-bit channels are required within a compact footprint. The internal 2.5V reference simplifies design by eliminating external reference components. Choose the LMX variant specifically if the system requires outputs to settle at mid-scale upon power-up rather than zero-scale or high-impedance states.

Part Context

This part belongs to the LTC2635 family, which offers 8-, 10-, and 12-bit resolutions. The CMSE prefix denotes the Commercial temperature grade (0°C to 70°C) and the 10-lead MSOP package. Other variants include the H-grade for automotive temperatures and the UD package for QFN housing. The family shares identical electrical characteristics and pinouts across resolutions.

Replacement Considerations

Direct replacements within the same family include LTC2635CMSE-LZ8#TRPBF for zero-scale reset or LTC2635CMSE-LMI8#TRPBF for internal reference mid-scale reset. Cross-resolution parts like LTC2635CMSE-LMX10#TRPBF are pin-compatible but offer higher accuracy.