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What is an operational amplifier in a circuit?

Article Source：Kinri Energy | Author：Kinri Energy | Issuing Time：2024.05.10
Operational amplifier is an important component in integrated circuits, which has the characteristics of high gain, high input impedance, and low output impedance.



Operational amplifiers are typically composed of multiple transistors and other components, designed to have specific amplification and input-output characteristics.

Operational amplifiers typically have two input terminals and one output terminal. One of the inputs is called the non feedback input (positive input), and the other input is called the feedback input (negative input).

The output signal of an operational amplifier depends on the voltage difference between the two input terminals, usually determined by multiplying the voltage difference between the negative input terminal and the positive input terminal by the amplification factor to determine the output voltage.

Operational amplifiers are commonly used in analog circuits and signal processing circuits, and are widely used in various electronic devices and systems.

It can be used for various functions such as amplification, filtering, integration, differentiation, comparison, etc., and is one of the indispensable components in modern electronic technology.
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