25 - Talking Electronics

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662 Principles of ElectronicsINTRODUCTIONHistorically, an operational amplifier (OP-Amp) was designed to perform suchmathematical operations as addition,subtraction, integration and differentiation. Hence,the name operational amplifier . An operationalamplifier is a multistage amplifier and consists of adifferential amplifier stage, a high-gain CE amplifierstage and class B push-pull emitter follower. Anoperational amplifier (OP-Amp) is an *integratedcircuit and is widely used in computers, as video andaudio amplifiers in communication of their multi-purpose use, OP-Amps are*All the components of an OP-Amp ( , transistors,resistors etc.) are fabricated on a small chip calledintegrated circuit. amplifier Circuit of Differential amplifier and Differential-mode signals Gains of Analysis of DifferentialAmplifier (DA) of DA (or Op amp) dueto Mismatch of Analysis of amplifier (OP- Amp) Voltage from of an Response of an of and Output Impedance ofInverting of Negative Feedback on OP-Amp of OP-AMP of Summing CircuitsOperationalAmplifiers25 Oper

Operational Amplifiers 663 used in all branches of electronics, both digital and linear circuits. In this chapter, we shall discuss the various aspects of operational amplifiers.

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