LTC2635HMSE-LMI8#TRPBF

Overview

The LTC2635HMSE-LMI8#TRPBF is a quad 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc., 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 includes rail-to-rail output buffers, guaranteed monotonicity over the –40°C to 125°C automotive temperature range, and communicates via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Power-on reset options include mid-scale initialization.

Feature Summary

• Quad 8-Bit Resolution with Integrated 2.5V Precision Reference
• Automotive Temperature Grade (–40°C to 125°C)
• Rail-to-Rail Output Buffers with Guaranteed Monotonicity
• I²C Interface with Selectable Power-On Reset to Mid-Scale

Applications

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

Procurement Notes

Verify the specific ordering suffix LMI8 confirms the mid-scale power-on reset behavior for internal reference mode. Confirm the MSE package designation matches the 10-lead MSOP physical form factor required for the design. Ensure the H-grade specification aligns with the intended operating temperature range requirements.

Selection Notes

Select this component when four independent 8-bit DAC channels are required within a compact 10-lead MSOP footprint. The H-grade variant is necessary for applications requiring operation below 0°C or above 70°C. The LMI8 suffix specifically configures the power-on reset state to mid-scale, which may be preferred over zero-scale or high-impedance states for specific system startup behaviors.

Part Context

This part belongs to the LTC2635 family, which also offers 10-bit and 12-bit resolutions and a QFN package option. The 'H' indicates the automotive temperature grade, while 'LMI8' specifies the 8-bit resolution, mid-scale reset function, and internal reference configuration. Other variants exist with different reset behaviors such as zero-scale (Z) or high-impedance (MO).

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2635HMSE-LZ8#TRPBF (zero-scale reset) and LTC2635HMSE-LMO8#TRPBF (high-impedance reset). For higher resolution needs, the 10-bit (LMI10) and 12-bit (LMI12) versions share the same package and interface but have different linearity specifications.