Adafruit
Adafruit TMP119 ±0.03°C I2C Temperature Sensor
· MPN: ADA6482
Built around Texas Instruments' TMP119, this breakout makes it easy to add extremely accurate temperature monitoring to your project over I2C. It is designed...
Built around Texas Instruments' TMP119, this breakout makes it easy to add extremely accurate temperature monitoring to your project over I2C. It is designed for applications where temperature really matters, including thermostats, cold chain asset tracking, and gas or heat metering, and it can also monitor for out-of-range conditions so your system can take corrective action.
Adafruit has mounted the sensor on a breakout PCB in the STEMMA QT form factor, making it simple to use either on a breadboard or with SparkFun Qwiic-compatible STEMMA QT connectors. The board is also designed to work with both 5V systems such as many Arduino boards and 3.3V logic platforms including Raspberry Pi and Feather. A QT cable is not included.
If you have used the TMP117 before, the firmware interface is the same here, apart from a different chip identifier so software can tell which device is fitted. Adafruit also provides TMP117/TMP119 support for Arduino, Python and CircuitPython, with wiring guidance, libraries and example code to help you get started quickly.
Specifications:
- Interface: I2C
- Measurement resolution: 16-bit / 0.0078°C
- Operating range: -55 to 155°C
- Accuracy (typical): ±0.03°C from 0°C to 45°C
- Accuracy (maximum): ±0.08°C from 0°C to 45°C
- Accuracy (maximum): ±0.09°C from –25°C to 85°C
- Accuracy (maximum): ±0.12°C from –40°C to 85°C
- Accuracy (maximum): ±0.15°C from –55°C to 125°C
- Accuracy (maximum): ±0.2°C from –55°C to 150°C
- Alert support: High and low temperature alerts and interrupt support
- NIST traceability support: Hardware support required for NIST traceability
- Firmware interface: Same as the TMP117, other than the Chip Identifier being different
- Form factor: STEMMA QT
- Connector compatibility: SparkFun qwiic compatible STEMMA QT connectors
- Logic compatibility: 5V voltage levels as commonly found on Arduinos, as well as 3.3V logic used by many other boards like the Raspberry Pi or Feathers
- Cable included: QT Cable is not included
A good fit for precision monitoring projects that need easy I2C wiring, broad board compatibility, and ready-to-use software support.
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- chip identifier
- A value stored in a device that software can read to confirm which chip is connected. It matters because similar sensors may use the same wiring and commands, but your program may need to detect the exact part to use it correctly.
- CircuitPython
- A beginner-friendly version of Python designed to run directly on microcontroller boards. If a product supports CircuitPython, you can often program it by copying code files onto the board rather than setting up a more complex toolchain.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- NIST traceability
- A way of linking a measurement back to standards maintained by the US National Institute of Standards and Technology. For temperature sensing, it matters when you need documented confidence that readings can be compared to recognised measurement standards.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
- Qwiic
- Qwiic is a plug-in connector system for I2C devices that uses small 4-pin cables, so you can connect compatible sensors without soldering. It matters because your controller or adapter also needs Qwiic, or you will need a cable or breakout to wire it up.
- STEMMA
- A plug-and-cable connection system used on some maker electronics boards to make wiring simpler. If a product uses STEMMA, you need the matching cable or connector type to plug it in without soldering.
- STEMMA QT
- A small plug-in connector system for I2C boards that lets you connect compatible sensors and controllers without soldering. It matters because it can make wiring faster and less error-prone, especially when adding several small modules to a project.
- TMP117
- A related Texas Instruments digital temperature sensor chip with a similar firmware interface to the TMP119. It matters because software written for the TMP117 may be adaptable to this board, but code may still need to check the chip identifier.
- TMP119
- A Texas Instruments digital temperature sensor chip designed for very accurate temperature measurement. The chip name matters because it determines the sensor’s accuracy, I2C software interface, and which libraries or example code will work with the board.
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TMP119 Datasheet
Datasheet · 1.1 MB · Click any page to view full size
Supplier page — adafruit.com
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