Open-loop gain: Difference between revisions

Revision as of 08:38, 5 November 2005

Revision as of 21:45, 5 November 2005

Line 2:

Open loop gain is usually exceedingly high; in fact, an ideal operational amplifier has infinite open-loop gain. Typically an op-amp may have an open-loop gain of around <math>10^5</math>. Normally, feedback is applied around the op-amp so that the gain of the overall [[circuit]] is defined and kept to a figure which is more usable. However the very high gain of the op-amp enables considerable levels of feedback to be applied to achieve required performance. The open-loop gain of an operational amplifier falls very rapidly with increasing [[frequency]]. Along with [[slew rate]], this is one of the reasons why operational amplifiers have limited [[bandwidth]].

{{Electro-stub}}

{{Electro-stub}}[[Media:Example.ogg]][[Media:Example.ogg]][[Media:Example.ogg]][[Media:Example.ogg]][[Media:Example.ogg]]