Open-loop gain: Difference between revisions

Revision as of 07:11, 25 October 2016

Revision as of 18:57, 13 December 2016

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The '''open-loop gain''' of an [[operational amplifier]] is the [[Gain (electronics)|gain]] obtained when no [[feedback]] is used in the [[electrical network|circuit]].

Open loop gain is usually exceedingly high; in fact, an ideal operational amplifier has infinite open-loop gain. Typically an op-amp may have a maximal open-loop gain of around <math>10^5</math>. Normally, feedback is applied around the op-amp so that the gain of the overall [[electrical network|circuit]] is defined and kept to a figure which is more usable. The very high open-loop gain of the op-amp allows a wide range of feedback levels to be applied to achieve the desired performance.