Product Descriptions

The MAX31855 performs cold-junction compensation and digitizes the signal from a K-, J-, N-, T-, S-, R-, or E-type thermocouple. The data is 

output in a signed 14-bit, SPI-compatible, read-only format. This converter resolves temperatures to 0.25°C, allows readings as high as +1800°C 

and as low as -270°C, and exhibits thermocouple accuracy of ±2°C for temperatures ranging from -200°C to +700°C for K-type thermocouples. 

For full range accuracies and other thermocouple types, see the Thermal Characteristics specifications.

Product Applications

● Industrial

● Appliances

● HVAC

Product Benefits and Features

● Integration Reduces Design Time and Lowers System Cost

• 14-Bit, 0.25°C Resolution Converter

• Integrated Cold-Junction Compensation

• Versions Available for Most Common Thermocouple Types: K-, J-, N-, T-, S-, R-, and E-Type

• Detects Thermocouple Shorts to GND or VCC

• Detects Open Thermocouple

● Interfaces to Most Microcontrollers

• Simple SPI-Compatible Interface (Read-Only)

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