The Non-ideal Op Amp Method for Feedback Circuit Analysis

Abstract

The non-ideal operational amplifier (op amp) technique is offered as a fresh way for analyzing feedback circuits. The approach accurately identifies the feedback type and determines the feedback network loading to the input and output of the amplifier, two of the primary challenges of the two-port analysis. In order to circumvent the issue of feedback type determination, the suggested technique generalizes the traditional op amp theory by considering every amplifier as a voltage amplifier. No feedback loading determination is required since all calculations are done assuming an open circuit with no load. An approach to accurately calculating the output impedance in current feedback is also shown in the paper.