LTC2631CTS8-HM8#TRMPBF

Overview

The LTC2631CTS8-HM8#TRMPBF is a single-channel, 8-bit voltage-output digital-to-analog converter (DAC) manufactured by Analog Devices Inc. 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 a rail-to-rail output buffer guaranteed monotonic over temperature and supports I²C interfaces at standard (100kHz) and fast (400kHz) modes. It incorporates a power-on reset circuit configured to reset to mid-scale upon power-up. The component is housed in an 8-lead TSOT-23 package and is rated for operation across the automotive temperature range of –40°C to 125°C.

Feature Summary

• 8-Bit Resolution with Integrated 4.096V Reference
• Automotive Temperature Grade (–40°C to 125°C)
• Power-On Reset to Mid-Scale
• I²C Interface Supporting 400kHz Clock Rate

Applications

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

Procurement Notes

Verify that the specific suffix HM8 corresponds to the 4.096V full-scale voltage, mid-scale power-on reset, and 8-bit resolution as defined in the manufacturer's ordering guide. Confirm the C-grade designation aligns with the required commercial temperature range if the automotive H-grade specification is not strictly necessary for the application environment.

Selection Notes

Select this part when a compact 8-bit DAC with a fixed 4.096V output span is required. Ensure the system supply voltage remains within the 4.5V to 5.5V range specified for the H-series devices. Consider the mid-scale reset behavior during system initialization; if zero-scale startup is preferred, a Z-suffix variant should be selected instead.

Part Context

This component belongs to the LTC2631 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The family shares a common 8-lead TSOT-23 package and I²C interface architecture. Variations within the family are distinguished by resolution, internal reference voltage (2.5V or 4.096V), power-on reset state, and operating temperature grade.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation.