LTC2635CMSE-HMI10#PBF

Overview

The LTC2635CMSE-HMI10#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 4.096V and operates from a single 4.5V to 5.5V supply. The device includes rail-to-rail output buffers and is guaranteed monotonic over the –40°C to 125°C temperature range. Communication is handled via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Power-on reset options include mid-scale initialization in internal reference mode.

Feature Summary

• Quad 10-bit DACs with integrated 10ppm/°C precision reference
• 4.096V full-scale output operating on 4.5V to 5.5V supply
• Rail-to-rail output buffers with guaranteed monotonicity
• I²C-compatible interface with selectable power-on reset states

Applications

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

Procurement Notes

Verify the specific suffix #PBF indicates lead-free construction and MSE denotes the 10-lead MSOP package. Confirm the H-grade designation for automotive temperature range (-40°C to 125°C) and MI suffix for mid-scale power-on reset behavior. Ensure compatibility with 4.5V to 5.5V supply requirements before procurement.

Selection Notes

Select this part when four independent 10-bit outputs are required with high accuracy and low drift. The H-grade variant is necessary for applications exceeding 70°C or requiring automotive reliability. Use external reference mode if the system requires a full-scale voltage different from 4.096V. Ensure the I²C bus speed does not exceed 400kHz.

Part Context

This component belongs to the LTC2635 family, which also offers 8-bit and 12-bit resolutions. Other variants include the LTC2635-L for 2.5V full-scale operation on lower voltages and the LTC2635-CUD for QFN packaging. The CMSE-HMI10#PBF specifically combines the commercial temperature grade C, MSOP package, H-grade electrical performance, and 10-bit resolution.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2635HMSE-HMI10#PBF (identical specs) or LTC2635HMSE-HZ10#PBF (zero-scale reset). For different resolutions, consider LTC2635HMSE-HMI12#PBF (12-bit) or LTC2635HMSE-HMI8#PBF (8-bit). Cross-family substitutes like LTC2634 require SPI interface changes.