4 Replies Latest reply on Jul 30, 2018 8:00 AM by AlVa_264671

    Sar ADC''s output code


      Hi  there

      I always used ADC Delta sigma. This is my firs time  with Sar ADC.

      I have attached a simple project  where the  minus Sar's input is  hooked up to  Vref/2

      From a pot I change the + input volatge between  Vssa and Vdda.

      I don't know what I am missing but I expect get negative values when V+ - V-   is negative  and positive values when the diference is positive.

      I just got values from  0 couts  to 4095 counts  when the positive input  is from 0v to 3.3v ,in this case.

      Please see attached project.

      Thank you in advance