4 Replies Latest reply on Jul 20, 2020 11:53 PM by VasanthR_91

    Transimpedance Amplifier PSoC 4200 BLE

    EfAv_4380776

      Hello, everyone I'm trying to interface the SFH7050 sensor which contains 3 LEDs and 1 Photodiode.

      I need to calculate the value of the feedback capacitor (Cf). To do this I have the next equation:

      datasheet.PNG

      Rf is a value I can choose, C_d is on the datasheet so I need to figure out GBP and C_TIA from the PSoC's Op-amp Datasheet.

       

      I've read it and I guess GBW_HI it's the GBP the equation mentions, am I right?
      Plus I haven't been able to find the input capacitance of the Op-amp. Where can I find it?

       


      Thanks