Definition of operational amplifier in English:

operational amplifier

noun

Electronics
  • An amplifier with high gain and high input impedance (usually with external feedback), used especially in circuits for performing mathematical operations on an input voltage.

    • ‘Specially designed low noise transistors and operational amplifiers have been designed that have a very low noise figure and these are what the design engineers have used in the amplifier stages that are used in the Tower Top Amplifiers.’
    • ‘And with this, their conversation has shifted from op-amps to the upcoming French Open.’
    • ‘The digital communications circuit includes an impedance controller having an operational amplifier connected to control an impedance presented to the two-wire loop by the interface circuit.’
    • ‘Each detector was connected to a standard 741 integrated circuit operational amplifier and a potentiometer to vary the gain of the amplifier.’
    • ‘Keep in mind that a typical IC operational amplifier may have two-dozen transistors.’