The MLX90327 is a family of dual thermocouple interface IC, intended for sensing of high temperatures in a harsh automotive environment.

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Top features

  • Sensor interface for 2 thermocouples (TC) or 1 thermocouple and 1 Resistance Temperature Detectors (RTD)     

  • K and N thermocouples linearization support and cold-junction compensation for hot junction temperatures up to 1300°C

  • RTD sensors support up to 950°C

  • Extended Operating temperature: -40ºC .. +155ºC operating

  • Push-pull or Open Drain Output for SENT and PWM

  • Can attains the high accuracy of ±2.5°C for Ta>0degC

  • High update rate up to 75Hz

  • RoHS compliant QFN 4x6 26 pins package for even smaller PCB area

  • Thermocouple fault detection: broken sensors, short to ground/VDD, insulation check

  • Hot junction temperature range: -40ºC .. +1.300ºC

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Temperature sensor interface - MLX90327

Product description

The MLX90327 is a family of dual thermocouple interface IC, intended for sensing of high temperatures in a harsh automotive environment. Currently two versions of this product exist, both featuring dual channel interface for two thermocouple (TC), or 1 thermocouple + 1 Resistance Temperature Detectors (RTD):

  • MLX90327LLW-AAA-001 -Standard accuracy

  • MLX90327LLW-AAA-101 -High accuracy


Drawing on nearly three decades of experience within the automotive business, our MLX90327 offers a robust solution to measure high temperatures.
Being a smart sensor interface, the MLX90327 supports SENT protocol or two channels of 12-bit PWM, configurable by a single setting.

With their high operating temperature up to 155ºC and wide measurement range (up to 1.300ºC) the interfaces are intended for use in new high temperature applications where current standard automotive temperature sensor solutions can no longer offer the required reliability and lifetime.

Features and benefits

  • Sensor interface for 2 thermocouples (TC) or 1 thermocouple and 1 Resistance Temperature Detectors (RTD)     

  • K and N thermocouples linearization support and cold-junction compensation for hot junction temperatures up to 1300°C

  • RTD sensors support up to 950°C

  • Extended Operating temperature: -40ºC .. +155ºC operating

  • Push-pull or Open Drain Output for SENT and PWM

  • Can attains the high accuracy of ±2.5°C for Ta>0degC

  • High update rate up to 75Hz

  • RoHS compliant QFN 4x6 26 pins package for even smaller PCB area

  • Thermocouple fault detection: broken sensors, short to ground/VDD, insulation check

  • Hot junction temperature range: -40ºC .. +1.300ºC

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