LTC2635CMSE-LMI8#TRPBF

Overview

The LTC2635CMSE-LMI8#TRPBF is a quad 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. 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 voltage ranging from 2.7V to 5.5V. It includes rail-to-rail output buffers and is guaranteed monotonic over the commercial temperature range of 0°C to 70°C. Communication is handled via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. The part incorporates a power-on reset circuit configured to reset outputs to mid-scale in internal reference mode.

Feature Summary

• Quad 8-Bit Resolution with Integrated 2.5V Precision Reference
• Rail-to-Rail Output Buffers Guaranteed Monotonic
• I²C Interface with Standard and Fast Mode Support
• Power-On Reset to Mid-Scale in Internal Reference Mode

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Power Supply Margining
• Portable Equipment

Procurement Notes

Verify the package type corresponds to the 10-lead MSOP (MSE) designation within the ordering suffix. Confirm that the C-grade temperature rating meets the operational requirements, as this variant is specified for 0°C to 70°C rather than the automotive -40°C to 125°C range. Ensure the L-series full-scale voltage aligns with system design constraints.

Selection Notes

Select this component when four independent 8-bit DAC channels are required in a compact surface-mount package. The internal 2.5V reference simplifies design by eliminating external reference components. Verify that the I²C address configuration via CA0-CA2 pins allows for proper bus addressing in the target system architecture.

Part Context

This part belongs to the LTC2635 family, which offers 12-, 10-, and 8-bit resolutions. The CMSE suffix indicates the Commercial temperature grade and 10-lead MSOP package. The LMI8 suffix specifies the 2.5V full-scale internal reference and mid-scale power-on reset behavior. Other variants include H-grade for automotive temperatures and different reset configurations such as zero-scale or high-impedance states.

Replacement Considerations

Direct replacements within the same family include LTC2635CMSE-LZ8#TRPBF for zero-scale reset or LTC2635CMSE-LMO8#TRPBF for high-impedance reset upon power-up. For higher resolution needs, consider the 10-bit LTC2635CMSE-LMI10#TRPBF or 12-bit LTC2635CMSE-LMI12#TRPBF, ensuring pin compatibility and supply voltage ranges remain suitable.