2 Replies Latest reply on Dec 25, 2018 11:45 AM by BoTa_264741

    RC filter for PSOC ADCs


      I have a quick question for an analog circuit that is low frequency.  I am implementing a PH meter that is reading a voltage from a probe (that is a very low current battery). It is amplified by a TI LMP91200 opamp and then sent to the delSig (at 16 bit, 200k sps with bypass cap).  I was going to put RC filters on the inputs to block some noise coming from switching power supplies, etc. Can someone recommend a good set of R and C values for this?  is this even necessary?