The operational amplifier is arguably the most useful single device in analog electronic circuitry. When you apply them in the circuits, you must know their basics and functions. As for the function ...
Video op amps (like the good engineers who design with them) are constantly being asked to do more with less. To enable higher video resolution, higher analog-video signal bandwidths are required, ...
Op-amps are among the most widely used electronic devices, and are designed into many consumer, industrial, and scientific devices. General purpose, standard op amps sell for well under one dollar.
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