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I'm implementing an stm32 which reads data from an LTM86 sensor and transmits the converted temperature in a CAN bus. My problem is related to the ADC configuration because the voltage value provided by the ADC is different from that measured on the pin with a voltmeter. As a consequence, the converted temperature will be wrong.

I tried this ADC setup:

ADC setting

Nick is tired
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Gi.17
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  • Is different? What does it mean? Is it 1V or 0.01V difference? – 0___________ Dec 06 '21 at 10:27
  • my temperature is 18°C which corresponds to 1907 mV (simply by looking the look up table), but the ADC gives me 2300 mV which corresponds to -18°C. – Gi.17 Dec 06 '21 at 10:48

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