1 2 Previous Next 20 Replies Latest reply on Jun 5, 2013 6:53 AM by user_14586677

    PSOC4 ADC with variable Vdda (battery direct supply without LDO)

    amaza

      Hello.

         

      I want to use ADC SAR of PSOC4 for measuring some external variables in the 0-Vdda range.

         

      I can use 1.024 ref, and do  resistor dividers for putting all analog voltajes under 1.024V.

         

      But if I use Vdda ref, what happens with ADC_CountsTo_Volts function if Vdda changes from 3.6 to 2.8V? 

         

      Also, can I measure Vdda directly? 

         

       

         

      Best regards.

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