Op-Amp with Limited Output

Purpose

Ideal operational amplifier with limited output voltage

Library

Electrical / Electronics

Description

../../_images/opamplim.svg

This component amplifies a voltage between the non-inverting “+” and inverting “–” input with a specified gain, taking into account the specified output voltage limits. The resulting voltage is applied between the output and ground terminal. Output and ground are electrically isolated from the inputs. If you want to build a linear amplifier, the output voltage must somehow be fed back to the inverting input.

The following demo model shows a possible application of the Limited Op-Amp.

Demo Model

  • See the demo model “Operational Amplifier Circuits”.

  • Find it in PLECS under Window > Demo Models > Electronics.

Parameters

Open-loop gain

The voltage gain of the amplifier if operating in linear mode, in volts \((\mathrm{V})\). The default is 1e6.

Output voltage limits

A two-element vector containing the minimum and maximum output voltage \(V_{\mathrm{min}}\) and \(V_{\mathrm{max}}\) in volts \((\mathrm{V})\). The default is [-10 10].