Just wondering if there is a way to minimize the loading down of the I/O. I have a 22uF capacitor attached to the AN0 pin on a F452 and it works great until I remove the signal. The capacitor will hope and release the charge over a great period of time which is not what I want. If I put in a load resistor to discharge the capacitor is drops my voltage being measured on the I/O by about 1V at 3V, I'm using a 10k but this is having a major affect in the readings. I can probably adjust the scale to compensate for the increased load if I have too. Is there something that I'm missing?
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