Sunday, July 19, 2009

Texas Instruments TMP100 Temperature Sensor

When looking for cheap and accurate temperature sensors for the next up and coming near space balloon project, I came across this great little device from TI. The TMP100. Tonight I interfaced these little devices with a PIC18F4520 via I2C and everything is working perfectly.

Some basic info about this sensor:

Resolution: up to 12bit
Temperature range: -55 to +125 degrees Celsius

I plan on using two of these to monitor temperature, one for the inside electronics temperature and one for the outside environment temperature.


  1. Hi, I want to use 8 of these ICs for my project but I have some questions about the use of the TMP100. As you have succesfully manage to use these temperature sensors I hope that you can help me. You can contact me by email at Best regards.

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  3. hey i desperately need a little help.
    i am working on a project involving using a tmp100 interfaced with pic 18f4520. i have absolutely no idea on how to proceed.
    can u help out by sending me the circuit diagram and code required?