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| {{Unreferenced stub|auto=yes|date=December 2009}}
| | Name: Reyes Bennetts<br>Age: 23 years old<br>Country: Belgium<br>Home town: Antwerpen <br>ZIP: 2000<br>Street: Rue Du Pont Simon 59<br><br>Feel free to surf to my web blog :: FIFA 15 coin hack - [http://stjohnatlanta.org/groups/fifa-15-coin-hack/ click the up coming webpage], |
| The '''open-loop gain''' of an [[operational amplifier]] is the [[gain]] obtained when no [[feedback]] is used in the [[electrical network|circuit]].
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| 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 [[electrical network|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 (signal processing)|bandwidth]].
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| <math>A_{\text{OL}}=\frac{V_{\text{out}}}{\left(V^+-V^-\right)}</math> | |
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| As you can see from the definition above, in an ideal amplifier where <math>V^+=V^-</math>, the open loop gain (<math>A_{\text{OL}}</math>) becomes infinite.
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| == See also ==
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| * [[Loop gain]]
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| {{DEFAULTSORT:Open-Loop Gain}}
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| [[Category:Electrical parameters]] | |
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| {{Electronics-stub}}
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Latest revision as of 15:45, 20 December 2014
Name: Reyes Bennetts
Age: 23 years old
Country: Belgium
Home town: Antwerpen
ZIP: 2000
Street: Rue Du Pont Simon 59
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