LTC2636CMS-HMI10#TRPBF

Overview

The LTC2636CMS-HMI10#TRPBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated 4.096V full-scale reference with a 10ppm/°C temperature coefficient, operating on a single 4.5V to 5.5V supply. The device provides rail-to-rail output buffers and guarantees monotonicity over the automotive temperature range of –40°C to 125°C. Communication occurs via a 50MHz SPI-compatible 3-wire serial interface. Power-on reset defaults to mid-scale in internal reference mode. It is housed in a 16-lead MSOP package.

Feature Summary

• Octal 10-Bit Resolution: Provides eight independent DAC channels with 10-bit precision.
• Integrated Reference: Includes a 4.096V internal reference with ±10ppm/°C drift.
• Ambient Stability: Guaranteed monotonic operation across –40°C to 125°C.
• Fast Interface: Supports 3-wire SPI/MICROWIRE communication at clock rates up to 50MHz.

Applications

• Automotive systems requiring high reliability and wide temperature tolerance
• Process control and industrial automation equipment
• Portable battery-powered instrumentation
• Optical networking signal generation

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging containing 2500 units. Confirm the H-grade designation matches the required 4.5V to 5.5V supply constraint and automotive temperature range for the target application environment.

Selection Notes

Select this part when eight isolated analog outputs are needed with a fixed 4.096V span. The H-grade variant is mandatory for applications exceeding 85°C or requiring operation up to 125°C. Ensure the system power supply remains within the 4.5V to 5.5V window to maintain specified linearity and performance metrics.

Part Context

This component belongs to the LTC2636 family of octal DACs. The CMS-HMI10 designation specifies the commercial temperature grade prefix (though H overrides to automotive), MSOP package, mid-scale reset behavior, and 10-bit resolution. It shares the same core architecture as the 8-bit and 12-bit variants but is optimized for the 4.096V full-scale range.

Replacement Considerations

Direct pin-compatible substitutes include other LTC2636 variants such as the LTC2636HMS-LMI10#TRPBF (mid-scale external ref) or LTC2636HMS-ZI10#TRPBF (zero-scale reset). Verify that the replacement's power-on reset state aligns with downstream circuit requirements.