LTC2635CMSE-LMX12#TRPBF

Overview

The LTC2635CMSE-LMX12#TRPBF is a quad 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed 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 on a single supply ranging from 2.7V to 5.5V and communicates via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity error of ±2.5 LSB, rail-to-rail output buffers, and guaranteed monotonicity over the commercial temperature range of 0°C to 70°C.

Feature Summary

• Quad 12-bit resolution with integrated 2.5V precision reference (10ppm/°C drift)
• I²C-compatible serial interface with selectable internal or external reference mode
• Power-on reset configured for mid-scale output in external reference mode
• Rail-to-rail output buffers with ultralow crosstalk (3nV•s typical)

Applications

• Mobile communications systems
• Process control and industrial automation
• Portable equipment requiring low power consumption

Procurement Notes

Verify that the specific suffix LMX12 corresponds to the intended power-on reset behavior (mid-scale in external reference mode) and the 12-bit resolution. Confirm the MSE package designation matches the required 10-lead MSOP footprint. Ensure the C-grade temperature rating (0°C to 70°C) meets the operational environment requirements.

Selection Notes

Select this component when a quad-channel DAC with high accuracy and low power is required. The LMX suffix is critical if the design mandates a mid-scale power-on state specifically for external reference configurations. For applications requiring zero-scale reset or automotive temperature ranges (-40°C to 125°C), alternative suffixes such as LZ or H-grade parts must be considered.

Part Context

This part belongs to the LTC2635 family of quad DACs available in 12-, 10-, and 8-bit resolutions. The CMSE variant denotes the commercial temperature grade and MSOP packaging. Other package options include the 16-pin QFN (UD), while other temperature grades include the automotive-rated H version. The family shares identical pinouts and core functionality, differing primarily in resolution, reset behavior, and operating temperature limits.

Replacement Considerations

Direct replacements within the same family include LTC2635CMSE-LZ12#TRPBF (zero-scale reset) or LTC2635CMSE-LMI12#TRPBF (mid-scale reset in internal reference mode). Cross-package equivalents are available in the UD (QFN) format, such as LTC2635CUD-LMX12#TRPBF, provided the PCB layout supports the larger footprint.