Open-loop gain

The open-loop gain of an electronic amplifier is the gain obtained when no overall feedback is used in the circuit.^[1]^[2]

The open-loop gain of many electronic amplifiers is exceedingly high (by design) – an ideal operational amplifier (op-amp) has infinite open-loop gain. Typically an op-amp may have a maximal open-loop gain of around $10^{5}$ , or 100 dB. An op-amp with a large open-loop gain offers high precision when used as an inverting amplifier.

Normally, negative feedback is applied around an amplifier with high open-loop gain, to reduce the gain of the complete circuit to a desired value.

^ Cite error: The named reference :0 was invoked but never defined (see the help page).
^ "Open-Loop Gain - an overview | ScienceDirect Topics". www.sciencedirect.com. Retrieved 2024-10-13.

[:0-1] Cite error: The named reference :0 was invoked but never defined (see the help page).

[2] "Open-Loop Gain - an overview | ScienceDirect Topics". www.sciencedirect.com. Retrieved 2024-10-13.

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