2 Replies Latest reply on Jun 23, 2015 5:51 AM by user_14586677

    Resistance and Capacitance of AMUX and ADC

    sainer
              I have 2 quick questions. 1. What is the ON resistance and capacitance of AMUX and AMUX Sequencer?. 2. What is the Sampling Resistance and Capacitance of SAR and Delta Digma ADC?   
        • 1. Re: Resistance and Capacitance of AMUX and ADC
          user_14586677

          1. What is the ON resistance and capacitance of AMUX and AMUX Sequencer?.

             

           

             

          From the device datasheet -

             

           

             

           

             

          2. What is the Sampling Resistance and Capacitance of SAR and Delta Digma ADC?

             

           

             

          Input SAR R is in device datasheet or component datasheet. Same is true for DelSig.

             

           

             

          Use the ohmmeter tool in analog view tab *.cydwr file workspace explorer for evaluating mux

             

          resistance.

             

           

             

          Regards, Dana.

          • 2. Re: Resistance and Capacitance of AMUX and ADC
            sainer
                    Dana, Thanks for your reply. Btw, what's the different with following attached snapshot?. I found it in "GPIO DC Specifications" section. One more thing, what is the impedance of Vref pin (e.g: P0[3])? I think it is the noninverting input of the Op Amp. I want to know whether I need to put Buffer on it or not.