Op Amp DefinitionAn op amp (operational amplifier) is defined as a DC-coupled voltage amplifier with a high voltage gain used in various electronic circuits.Working PrincipleThe op amp amplifies the difference between two input signals, known as the differential input voltage, in its open loop operation.Closed Loop OperationIn closed loop mode, feedback is introduced to control the output signal, with positive feedback used for oscillators and negative feedback for amplifiers.Op Amp Characterist