September 2008
Beginner
834 pages
37h 13m
English
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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, ...
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