6.3 THE OPERATIONAL AMPLIFIER
Ideal amplifiers are physically unrealisable. Operational Amplifiers try to approach the ideal amplifiers.
Operational Amplifier is a multi-stage high gain voltage-to-voltage amplifier with a differential input and a single-ended output. It is an integrated circuit package. We use the short name Opamp for Operational Amplifier in this book.
It is a differential amplifier and has two signal input terminals. It amplifies the difference between the voltages applied at the input terminals. These two input voltages as well as the output voltage are referred to a common ground terminal.
Ground in an Opamp is not a terminal or a pin of the Opamp. It is a node outside the Opamp. In Opamps working from a single DC power supply, ...
Get Electric Circuits and Networks now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
