LTC2634HMSE-LMX12#PBF

Overview

The LTC2634HMSE-LMX12#PBF is a quad 12-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 4.096V and operates from a 4.5V to 5.5V supply. The device includes rail-to-rail output buffers, guaranteed monotonicity over the -40°C to 125°C automotive temperature range, and communicates via a 50MHz SPI/MICROWIRE compatible 3-wire serial interface. Power-on reset defaults to mid-scale in external reference mode.

Feature Summary

• Quad 12-bit resolution with ±2.5 LSB maximum integral nonlinearity error
• Integrated 4.096V full-scale reference with 10ppm/°C drift
• Automotive grade (-40°C to 125°C) with AEC-Q100 qualification
• Power-on reset to mid-scale in external reference mode

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive Systems

Procurement Notes

Verify the specific ordering suffix against official Analog Devices documentation to confirm package type, temperature grade, and power-on reset behavior. Ensure compatibility with system voltage requirements, as the H-grade variant requires a minimum 4.5V supply. Confirm that the MSOP package meets PCB layout constraints for thermal dissipation and pin pitch.

Selection Notes

Select this part when a quad DAC configuration with high accuracy and automotive reliability is required. The H-grade designation indicates a 4.096V internal reference and operation from 4.5V to 5.5V supplies. The MSE suffix specifies the 10-lead MSOP package. Verify if mid-scale power-on reset behavior aligns with downstream circuit safety requirements during initialization.

Part Context

This component belongs to the LTC2634 family of quad DACs, which also includes 8-bit and 10-bit variants. The family shares similar architectural features but differs in resolution, linearity specifications, and supply voltage ranges based on the L (2.5V) or H (4.096V) full-scale designations. The HMSE suffix combination uniquely identifies the 12-bit resolution, H-grade temperature range, and MSOP packaging.

Replacement Considerations

Direct substitutes within the same family include LTC2634IMSE-LMX12#PBF (Industrial grade) or LTC2634CUD-LMX12#PBF (Commercial grade QFN). Cross-family replacements like the LTC2635 offer I2C interfaces instead of SPI. Verify pinout compatibility and electrical parameter overlaps before substitution.