LTC2636HMS-HMI8#TRPBF

Overview

The LTC2636HMS-HMI8#TRPBF is an octal 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 4.096V and operates on a single 4.5V 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 double-buffered data latches. 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

• Octal 8-Bit Resolution: Provides eight independent DAC channels with 8-bit resolution.
• Integrated Precision Reference: Includes a 10ppm/°C reference setting a 4.096V full-scale output.
• Automotive Temperature Grade: Guaranteed monotonic operation from –40°C to 125°C.
• SPI Interface: Supports 3-wire serial communication at clock rates up to 50MHz.

Applications

• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive Systems

Procurement Notes

Verify the H-grade designation confirms the –40°C to 125°C operating range and 4.5V minimum supply requirement. Confirm the MS package type corresponds to the 16-lead MSOP housing. Ensure the TR suffix indicates tape and reel packaging for automated assembly processes.

Selection Notes

Select this part when eight independent analog outputs are required within a compact footprint. The H-grade variant is necessary for high-temperature automotive or industrial environments. The 4.096V internal reference simplifies design by eliminating external reference components compared to external reference variants.

Part Context

This component belongs to the LTC2636 family of octal DACs available in 12-, 10-, and 8-bit resolutions. The specific model utilizes the 'H' suffix for automotive temperature grading and 'MS' for the 16-lead MSOP package. Other family members include DFN packages and different power-on reset configurations.

Replacement Considerations

Direct substitutes within the same package and pinout include other LTC2636 variants such as LTC2636HMS-LMI8 or LTC2636HMS-HZ8, provided the power-on reset behavior matches system requirements. Cross-family replacements require careful verification of pin compatibility and electrical specifications.