LTC2634HMSE-LMI12#PBF

Overview

The LTC2634HMSE-LMI12#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 2.5V and operates from a single 2.7V to 5.5V supply. The device includes rail-to-rail output buffers, guaranteed monotonicity over the -40°C to 125°C temperature range, and a maximum integral nonlinearity error of ±2.5 LSB. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface with clock rates up to 50MHz. Power-on reset defaults to mid-scale in internal reference mode.

Feature Summary

• Quad 12-bit resolution with integrated 10ppm/°C precision reference
• Rail-to-rail output buffers with ultralow crosstalk (2.4nV•s)
• SPI/MICROWIRE compatible 3-wire serial interface operating at 50MHz
• Guaranteed monotonic operation from -40°C to 125°C

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive systems

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free construction compliant with RoHS standards. Confirm the MSE package designation corresponds to the 10-lead MSOP form factor. Ensure the H-grade temperature rating matches the required -40°C to 125°C operational environment for automotive or high-reliability applications.

Selection Notes

Select this part for applications requiring four independent 12-bit channels with low power consumption and high accuracy. The L-series designation ensures compatibility with 2.7V to 5.5V supplies, while the MI suffix configures the power-on state to mid-scale. Consider the MSOP package if board space constraints favor surface-mount technology over QFN options.

Part Context

This component belongs to the LTC2634 family of quad DACs, which also includes 8-bit and 10-bit variants. The HMSE-LMI12 configuration specifically denotes the H-grade temperature range, MSOP package, mid-scale internal reset, and 12-bit resolution. Other family members include the LTC2635, which utilizes an I2C interface instead of SPI.

Replacement Considerations

Direct substitutes within the same family include the LTC2634IMSE-LMI12#PBF for industrial temperature ranges (-40°C to 85°C). For lower resolution needs, the LTC2634IMSE-LMI10#PBF or LTC2634IMSE-LMI8#PBF offer pin-compatible alternatives with reduced bit depth.