operational amplifier

noun

Electronics.

1. a high-gain, high-input impedance amplifier, usually an integrated circuit, that can perform mathematical operations when suitably wired.

operational amplifier

noun

1. a high-gain direct-coupled amplifier, the response of which may be controlled by negative-feedback circuits externally connected

Word History and Origins

Origin of operational amplifier¹

First recorded in 1945–50

Example Sentences

Wu--the man who invented the matched dual operational amplifier in the early days of the integrated circuit--showed me how to use it.

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