Operational Amplifier with Capacitive Load

Application ID: 16283

An operational amplifier (op-amp) is a differential voltage amplifier with a wide range of applications in analog electronics. This tutorial models an op-amp connected to a feedback loop and a capacitive load.

The op-amp is modeled as an equivalent linear subcircuit in the Electrical Circuit interface, where it is inserted into an outer circuit. The model is partially based on the SPICE format. The model is simulated for 10 ms with data output every 0.05 ms. The internal dynamics of the op-amp interact with the feedback network, causing ringing in the output signal (step response).

This model example illustrates applications of this type that would nominally be built using the following products:

AC/DC Module