Operational Amplifiers and their Applications:

The integrated circuit op-amp is the most versatile and prominent building block of analog circuits. Although primarily op-amp was employed to carry out various mathematical operations like addition, integration, sign changing, function generation, etc. commonly employed for analog computation, from which the generic name operational amplifier was derived, with the availability of integrated circuit (IC) op-amp as on off-the-shelf item, now it has found several other applications in several diverse areas of signal processing, instrumentation, measurement and communication, etc.