OP amp [III]

Summary: Negative feedback in integrated op amp circuits

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1. In the transport characteristics of op AMP, it is said that---usually need to introduce the depth negative feedback in the op amp circuit.

So that the magnification is reduced, that is, negative feedback.

The essence of depth negative feedback is to ignore the net input in the approximate analysis

2. After introducing the depth negative feedback.

Amplifiers have a certain band width, exceeding this frequency range, the magnification will be significantly reduced. The existence of negative feedback widens the band of the amplifier.

OP amp [III]