Jim cage
Full Member level 2
Hi,
In switch capacitor applications (or simply just an regular integrator), How do we acheive virtual ground in the non-inverting pin of the op-amp?
Since there is a capacitive feedback, how do we maintain a virtual ground on the non inverting input? Even if the op-amp has infinite gain, the feedback is capacitor and open circuit at DC so how can it be that there is a virtual ground?
See figure below
In switch capacitor applications (or simply just an regular integrator), How do we acheive virtual ground in the non-inverting pin of the op-amp?
Since there is a capacitive feedback, how do we maintain a virtual ground on the non inverting input? Even if the op-amp has infinite gain, the feedback is capacitor and open circuit at DC so how can it be that there is a virtual ground?
See figure below