Definition and action of differential amplifiers

A differential amplifier is an integrated circuit that amplifies the difference between two input signals to the output. It is commonly used for signal processing, filtering, and general amplification. Differential amplifiers perform their functions by differentiating the signals from the two inputs and then amplifying them. The amplifier amplifies one signal (positive polarity) and inversely amplifies another signal (negative polarity) so that the output signal is the difference between the two input signals. Differential amplifiers are often used in signal processing, sampling, and control feedback systems, such as: Used to measure small signals and reduce noise interference. Peak detection using differential input signals to improve measurement accuracy. Can be used to achieve positive and negative feedback sessions to improve gain.

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