SKU: TH2060
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Adafruit MCP9601 I2C Thermocouple Amplifier Breakout makes it easy to add thermocouple temperature sensing to any microcontroller or single-board computer with an I2C interface. The onboard MCP96L01 handles cold-junction compensation and the analog front-end work for you, so you can read temperatures digitally over I2C instead of dealing with tiny thermocouple signals directly.
This breakout supports K, J, T, N, S, E, B, and R thermocouple types, letting you use it across a wide range of measurement applications. It can report both the thermocouple hot-junction temperature and the board's internal cold-junction temperature, and it also supports programmable over/under-temperature alerts.
The board comes assembled and tested, with onboard 3.3V regulator, level shifting, and SparkFun qwiic-compatible STEMMA QT connectors for fast I2C integration. It works with 3.3V or 5V logic. A 2-pin terminal block and pin header are included, though some soldering is required to attach them.
Technical details for the Adafruit MCP9601 breakout.
| Brand | Adafruit |
|---|---|
| Chipset | MCP96L01 / MCP9601 family |
| Interface | I2C |
| Logic / Supply | 3.3V to 5V compatible |
| Supported Thermocouples | K, J, T, N, S, E, B, R |
| Temperature Resolution | ±0.0625°C (resolution, not accuracy) |
| Thermocouple Accuracy | ±2.0°C typ., ±4.0°C max. for MCP96L01 |
| Cold Junction Reading | Yes |
| Alerts | Programmable over/under-temperature alerts |
| I2C Address | Default 0x67 |
| Connectors | 2-pin terminal block, pin header, STEMMA QT / qwiic-compatible I2C ports |
Note: measurement resolution is not the same as measurement accuracy, and overall system accuracy also depends on the thermocouple itself.
Power the board from the same logic voltage as your host system: use 3.3V with 3.3V boards or 5V with 5V boards. Then connect VIN, GND, SCL, and SDA to your controller, and wire the thermocouple leads to the included screw terminal.
The STEMMA QT connectors provide a convenient solderless I2C option when used with a compatible cable, though the QT cable is not included. If you plan to plug the board into a breadboard, solder on the included header; otherwise, you may only need the terminal block.
Package contents:
Important notes:
| Pin | Name | Function |
|---|---|---|
| 1 | VIN | Power input; use the same voltage as your microcontroller logic level |
| 2 | GND | Common ground for power and logic |
| 3 | SCL | I2C clock line |
| 4 | SDA | I2C data line |
| 5 | A1-A4 | Programmable alert outputs |
| 6 | ADDR | I2C address configuration pin; default address is 0x67 |
It supports K, J, T, N, S, E, B, and R type thermocouples. The thermocouple connects to the included 2-pin terminal block on the breakout.
Yes. The board is designed for 3.3V to 5V power and logic, with an onboard regulator and level shifting, so it can be used with both 3.3V and 5V systems over I2C.
It uses I2C for data, with standard VIN, GND, SCL, and SDA pins. It also includes STEMMA QT / Qwiic-compatible connectors for solderless I2C hookup, but the QT cable is not included.
The board can report both the thermocouple hot-junction temperature and the onboard cold-junction temperature. It also supports programmable over- and under-temperature alerts.
The default I2C address is 0x67. The MCP9601 supports 8 addresses from 0x60 to 0x67, so multiple boards can be used on the same I2C bus when their addresses are configured appropriately.
The board comes assembled and tested, and includes a 2-pin terminal block plus pin header. Some soldering is required to attach the terminal block or header, while the header is only needed if you want to use it on a breadboard.
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