The Operational Amplifier

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The Operational Amplifier

by KirtB » Tue Jul 25, 2017 10:02 am

The Operational Amplifier, July 1963 Electronics World

When you read this article's title, I doubt you immediately thought it would be about a vacuum tube circuit, or even one that uses discrete transistors to implement the circuit. Rather you most likely though it would be about an integrated circuit (IC). Operational amplifiers (opamps) are building blocks characterized (ideally) by their infinite input impedance, zero output impedance, infinite open-loop bandwidth and gain, zero input offset voltage, amongst other defined parameters. The first commercially produced IC opamp ...