LTC2635CMSE-LMX10#PBF

Overview

The LTC2635CMSE-LMX10#PBF is a quad 10-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 operates on a single 2.7V to 5.5V supply. The device utilizes a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical characteristics include rail-to-rail output buffers, guaranteed monotonicity over the –40°C to 125°C range, maximum integral nonlinearity error of ±1 LSB, and low noise of 0.75mV peak-to-peak from 0.1Hz to 200kHz.

Feature Summary

• Quad 10-bit resolution with integrated 2.5V precision reference (10ppm/°C drift)
• I²C-compatible serial interface with selectable slave addresses via CA0–CA2 pins
• Power-on reset configured for mid-scale output in external reference mode
• Ultralow DAC-to-DAC crosstalk (3nV•s) and double-buffered data latches

Applications

• Mobile communications systems
• Process control and industrial automation
• Power supply margining
• Portable equipment
• Automotive applications

Procurement Notes

Verify the specific ordering suffix LMX10#PBF against the manufacturer's current documentation to confirm the power-on reset behavior and lead-free status. Ensure the design supports the required I²C pull-up configuration and that the 10-lead MSOP thermal dissipation requirements are met for the intended operating temperature range.

Selection Notes

Select this component when four independent 10-bit channels are required with an internal 2.5V reference. The LMX suffix indicates a power-on reset to mid-scale in external reference mode; choose LZ or MI suffixes if zero-scale or internal-reference mid-scale resets are preferred. Verify that the 2.7V to 5.5V supply range aligns with the system power architecture.

Part Context

This part belongs to the LTC2635 family, which includes 8-bit, 10-bit, and 12-bit variants. The 'L' designation specifies the 2.5V full-scale internal reference version, while 'H' denotes the 4.096V version. The MSE package code identifies the 10-lead MSOP form factor, distinct from the 16-pin QFN option available in the same family.

Replacement Considerations

Direct replacements within the same family include LTC2635CMSE-LZ10#PBF (zero-scale reset) or LTC2635CMSE-LMI10#PBF (mid-scale reset in internal reference mode). Cross-family substitutes like the LTC2634 differ by using an SPI/MICROWIRE interface rather than I²C.