I have an op-amp which is supposed to work as a current to voltage converter. The feedback resistor that i have is 25 mega ohm while my input current is about 1 nanoamp. when i was looking at the output voltage, it was oscillating too much, but after i added a capacitor (10 pF) in parallel to the feedback resistor, i saw that the output voltage got very stable. can anyone explain why this thing is happening? i mean how a capacitor can stabilize a non-stable output voltage?
thanks
thanks