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MAX31855 - Thermocouple-to-Digital Converter

Description

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.

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) Ordering Information appears at end of data s.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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MAX31855 Cold-Junction Compensated Thermocouple-to-Digital Converter General Description 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. Applications ●● Industrial ●● Appliances ●● HVAC Typical Application Circuit Benefits and Features ●● Integration Reduces Design Time and Lowers System Cost • 14-Bit, 0.
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