• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 46 subscribers
  • Views 726 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

PGA900: Internal Temperature Sensor

Wojciech Sobol
Prodigy 90 points
Part Number: PGA900

The formula to convert the ADC reading to temperature is as follows (PGA900 datasheet, page 36)

  TEMP [°C] = (T ADC Code - 1710281.3) / 6632.1

Using the PGA900EVM software I am getting the reading of 0x1E7986 (1997190 in decimal).

According to the formula the Internal Sensor temperature should be 43.26°C, but the temperature shown in the table is 36.447632°C

Where this difference is coming from?

  • 0
    TI__Mastermind 31655 points
    Hello,

    The currently released GUI version has an incorrect formula for the internal temperature sensor. The datasheet formula you have included in your post is correct, and the GUI output is incorrect. The GUI will be updated on the web in the coming weeks. I will update this thread when the new version is online.

    Regards,