5 Replies Latest reply on Jun 5, 2012 4:07 AM by user_78878863

    Problem with one ADC SAR for multi-channel analog inputs

    qingshan.shan

      Hello,

         

      Software package: PSoC Creator 2.0

         

      Hardware: CYBC55 Board

         

      Schamatic design:  a single ADC SAR component + an analog multiplexer component + multi-analog Pins.

         

      The voltage value acquired from the ADC SAR is correct (Acquired voltage value = real world analog input voltage) when this design works on single analog input.  However, the voltage values acquired from the ADC SAR are wrong (Acquired voltage values != real world analog input voltages) when work on multi-channel inputs.

         

      Could you please advise me how to sort out this problem.

         

      Many thanks

         

      Qingshan