Microchip logo
  • All
  • Products
  • Documents
  • Applications Notes

Thermocouple Conditioning ICs

The thermocouple is one of the oldest and most widely used electronic temperature sensing devices. It consists of two wires, made from two dissimilar metals, that are welded together at one end. This creates a junction where the temperature is measured.

There are many types of thermocouples, each with its own unique characteristics in terms of temperature range, durability, vibration resistance, chemical resistance and application compatibility.  They provide a fast thermal response, are unaffected by vibration, are self-powered and can withstand temperatures ranging from -270°C to 2100°C, making them extremely versatile and ideal choices for use in harsh environmental conditions. They can be used in an array of applications in the industrial, medical, automotive, automated manufacturing processes and consumer markets.

Our innovative portfolio of highly integrated thermocouple conditioning IC solutions simplifies your development and speeds up your product’s time to market.  These devices integrate a precision high-resolution Analog-to-Digital Converter (ADC), a precision high-accuracy temperature sensor (for cold junction compensation) and precision instrumentation that corrects the thermocouple non-linear error characteristics of eight of the most popular thermocouple types used today. An on-board, preprogrammed math engine enables these ICs to accurately measure temperature through real-time non-linearity thermocouple corrections up to a ninth order equation.

Key Benefits

  • World’s first fully integrated thermocouple to degrees Celsius converter ICs
  • Combine a high-precision ADC, high-accuracy temperature sensor and a preprogrammed math engine into a single package to simplify designs
  • High temperature accuracy for precise applications
  • Small packaging to save space and cost
  • Easy-to-use thermocouple IC development kit allows you to quickly accelerate your design to production

Target Applications

Industrial

  • Furnaces
  • Kilns and smelters
  • Boilers and water heaters
  • Gas turbines
  • Industrial process control equipment
  • Chemical and petrochemical processing equipment
  • Oil and gas process equipment
  • Handheld medical equipment

Consumer

  • Barbeque grills/smokers
  • Ovens
  • Meat thermometers
  • Cooktops
  • Refrigerators and freezers
  • HVAC systems