# Differences

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 university:courses:electronics:text:chapter-3 [06 Jun 2017 16:47]_deletedUser0_ [3.2.4 Frequency Dependence of Loop Gain] university:courses:electronics:text:chapter-3 [06 Jun 2017 16:49] (current)_deletedUser0_ [3.2.3 Loop gain] Both sides previous revision Previous revision 06 Jun 2017 16:49 _deletedUser0_ [3.2.3 Loop gain] 06 Jun 2017 16:47 _deletedUser0_ [3.2.4 Frequency Dependence of Loop Gain] 16 Nov 2016 19:47 _deletedUser0_ correctin text back to original as a result of correcting error in figure labels G1 G216 Nov 2016 11:20 JackZL 31 Aug 2013 16:27 _deletedUser0_ [3: Introduction and Chapter Objectives] 30 Aug 2013 17:20 _deletedUser0_ [3.2.2 Gain Stability] 29 Aug 2013 20:26 _deletedUser0_ [3.5.1 Calculating Total Output Offset Error Due To IB And VOS] 29 Aug 2013 20:01 _deletedUser0_ created 06 Jun 2017 16:49 _deletedUser0_ [3.2.3 Loop gain] 06 Jun 2017 16:47 _deletedUser0_ [3.2.4 Frequency Dependence of Loop Gain] 16 Nov 2016 19:47 _deletedUser0_ correctin text back to original as a result of correcting error in figure labels G1 G216 Nov 2016 11:20 JackZL 31 Aug 2013 16:27 _deletedUser0_ [3: Introduction and Chapter Objectives] 30 Aug 2013 17:20 _deletedUser0_ [3.2.2 Gain Stability] 29 Aug 2013 20:26 _deletedUser0_ [3.5.1 Calculating Total Output Offset Error Due To IB And VOS] 29 Aug 2013 20:01 _deletedUser0_ created Line 89: Line 89: This loop gain discussion emphasizes that indeed, loop gain is a very significant factor in predicting the performance of closed-loop operational amplifier circuits. The open-loop gain required to obtain an adequate amount of loop gain will, of course, depend on the desired closed-loop gain.  ​ This loop gain discussion emphasizes that indeed, loop gain is a very significant factor in predicting the performance of closed-loop operational amplifier circuits. The open-loop gain required to obtain an adequate amount of loop gain will, of course, depend on the desired closed-loop gain.  ​ - For example, using equation 3-9, an amplifier with A<​sub>​VOL​ = 20,000 will have an A<​sub>​VOL​β ~ 2000 for a closed-loop gain of 10, but the loop gain will be only 20 for a closed-loop ​ gain of 1000. The first situation implies an amplifier-related gain error the order of ~ 0.05%, while the second would result in about 5% of error. Obviously, the higher the required gain, the greater will be the required open-loop gain to support an A<​sub>​VOL​β for a given accuracy. ​ + For example, using equation 3-9, an amplifier with A<​sub>​VOL​ = 20,000 will have an A<​sub>​VOL​β ~ 2000 for a closed-loop gain of 10, but the loop gain will be only 20 for a closed-loop ​ gain of 1000. The first situation implies an amplifier-related gain error the order of ~ 0.05%, while the second would result in about 5% of error. Obviously, the higher the required gain, the greater will be the required open-loop gain to support an A<​sub>​VOL​β for a given accuracy. ​ + + **ADALM1000 Lab Activity [[university:​courses:​alm1k:​alm-lab-olg|Open Loop Gain]]** ​ ====3.2.4 Frequency Dependence of Loop Gain ==== ====3.2.4 Frequency Dependence of Loop Gain ====