Temp Sensor Digital Serial (SPI) 8-Pin SOIC N T/R

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.

• 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 V_CC
  • Detects Open Thermocouple

Interfaces to Most Microcontrollers

• Simple SPI-Compatible Interface (Read-Only)