STM32F0 ADC Temperature Drift?

[danielblesener9]

Posted on May 08, 2014 at 17:48

Simple question - should be answered in datasheet, errata sheet, or ref manual but I cannot seem to find it. I am wondering how much ADC readings drift relative to the reference voltage with temperature. If I have a constant 2.500Vref that does not change with temp, how will my readings change with temp?

Thanks.

[chen]

Posted on May 09, 2014 at 12:52

Hi

Could not look it up for you because you did not specify which part you actual have (there are 7 F0 part datasheets). ''how much ADC readings drift relative to the reference voltage with temperature.'' ''If I have a constant 2.500Vref that does not change with temp, how will my readings change with temp?'' The closest thing I can find in a data sheet is ''5.3.21 Temperature sensor characteristics'' (from STMF405 datasheet - please look for it in datasheets for your part) The table has an entry ''VSENSE linearity with temperature'' To me, this implies that they have characterised the accuracy/linearity with temperature. (Vref does not affect it much) Hope this helps