MAX31855 Thermocouple Amplifier Breakout

High-Accuracy Thermocouple Interface for Demanding Applications: Measure Extreme Temperatures with Confidence

The 7Semi MAX31855 Thermocouple Amplifier Breakout is a robust and high-precision temperature sensing solution engineered for advanced industrial and scientific environments. Built around the MAX31855 thermocouple-to-digital converter, this breakout board allows seamless integration of K-type thermocouples with any SPI-compatible microcontroller or digital system. It provides accurate, real-time temperature readings in 0.25°C increments, ensuring exceptional resolution and precision for monitoring critical systems.

Capable of handling extreme temperature ranges from -270°C to +1372°C, this module is ideal for applications such as furnace monitoring, 3D printing, laboratory research, and HVAC systems. Cold-junction compensation is performed internally to eliminate temperature offset errors at the connection point, ensuring reliable measurements even in fluctuating ambient conditions. The module also detects open thermocouples and short circuits, enhancing operational safety and fault resilience in demanding environments.

Key Features

• Wide Temperature Measurement Range
  Supports readings from -270°C to +1372°C for K-type thermocouples (up to +1800°C with other types), ideal for industrial and high-heat applications.

• 14-bit High Resolution Output
  Delivers temperature data with 0.25°C resolution, providing fine detail and accuracy for precision-sensitive operations.

• Built-in Cold-Junction Compensation
  Internal temperature sensor ensures accurate readings by correcting for thermal junction effects at the connector.

• SPI-Compatible Digital Interface
  Easily interfaces with microcontrollers and development platforms using just three digital I/O pins via standard SPI communication.

• Multi-Thermocouple Compatibility
  Compatible with K-, J-, N-, T-, S-, R-, and E-type thermocouples, allowing versatile usage across various systems.

• Fault Detection & Diagnostics
  Detects open thermocouples and shorts to VCC or GND, improving system reliability and simplifying troubleshooting.

• Flexible Voltage Compatibility
  Supports 3.3V and 5V logic levels, making it suitable for a wide range of embedded systems and development boards.