Adafruit MCP9601 (MCP96L01) I2C Thermocouple Amplifier (STEMMA QT / Qwiic)

The Adafruit MCP9601 I2C Thermocouple Breakout (also known as MCP96L01) is the perfect solution for interfacing thermocouples with your microcontroller or single-board computer over I2C. This breakout board takes care of the delicate amplification and cold-compensation reference required for thermocouples, so you don't have to worry about the analog complexities. It supports a wide range of thermocouple types, including K, J, T, N, S, E, B, and R types, making it incredibly versatile.

With this breakout, you can read both the hot junction (thermocouple temperature) and the cold junction (chip temperature), as well as set alerts for over/under temperature conditions. All data is transmitted easily over the common I2C interface.

The board includes the MCP9601 chip, a 3.3V regulator, and level-shifting circuitry, making it compatible with both 3.3V and 5V logic. It also comes with a 2-pin terminal block for connecting your thermocouple and a pin header for easy breadboard or perfboard connection. You can pair it with our 1m K-type thermocouple for quick setup.

Key Features:

• Supports thermocouple types: K, J, T, N, S, E, B, R.
• Temperature range and accuracy:
  • K Type: -200°C to +1372°C
  • J Type: -150°C to +1200°C
  • T Type: -200°C to +400°C
  • N Type: -150°C to +1300°C
  • E Type: -200°C to +1000°C
  • S Type: +250°C to +1664°C
  • B Type: +1000°C to +1800°C
  • R Type: +250°C to +1664°C
• Resolution of ±0.0625°C (note: this is just ADC resolution, not accuracy).
• Thermocouple accuracy: ±2.0°C/±4.0°C typical/max (excluding inherent thermocouple inaccuracies).
• Internal cold junction temperature reading for more accurate measurements.
• I2C communication makes it easy to connect with just two data wires (plus power and ground).
• Works with 3.3V to 5V logic systems.
• STEMMA QT connectors for solderless connections with SparkFun Qwiic-compatible cables (QT cable sold separately).
• Comes assembled and tested; requires minimal soldering for attaching the terminal block or pin header.

This breakout is perfect for a wide range of applications, from industrial monitoring to DIY temperature sensing projects. We’ve even included a guide with code examples and schematics to get you started quickly. Whether you're tracking temperature in wearables, drones, or other systems, the MCP9601 breakout is your reliable thermocouple interface solution!

Technical Details: