[sdiy] op amp directly connected to ADC

mskala at ansuz.sooke.bc.ca mskala at ansuz.sooke.bc.ca
Mon Jul 29 20:02:27 CEST 2019


On Mon, 29 Jul 2019, Vladimir Pantelic wrote:
> my understanding is that you want to keep the thing driving the ADC input as
> low impedance as possible in order to minimize the time to charge the internal

Well, that's the point of including the capacitor, which will have a low
impedance at the relevant frequency.  Seems to me that it'd make more
sense to put that capacitance on the op amp's power supply pins, though.

-- 
Matthew Skala
mskala at ansuz.sooke.bc.ca                 People before tribes.
https://ansuz.sooke.bc.ca/


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