I'm having some difficulty understanding why an op-amp has an exponential response even if its slew-rate is infinite?
Isn't the exponential response of the op-amp output caused by the parasitic capacitances of the internal op-amp structure (CGS, CGD, etc.). And the slew-rate is caused by output capacitance?
I'm having some trouble distinguishing the two. I always thought that the exponential response of an op-amp to a step input was due to capacitances.