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relationship between Gain bandwidth and settling time of Opamp (Read 21563 times)
Berti
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Re: relationship between Gain bandwidth and settling time of Opamp
Reply #15 - Sep 16th, 2009, 4:07am
 
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Asmodeus' formula thus greatly overestimates the bandwidth needed.


Andre, your argumentation is wrong. The bandwidth of the amplifier needs to be higher in the presence of slewing because you have less time for linear settling. Keep in mind that slewing is a non-linear process, while linear settling will result in a linear settling error.

Quote:
Recently i came to know the 'if settling time is  the primary concern then dont try for 1st order response and make system slightly under damped hence in this scenario settling time calculated based on GBW is overestimated.


Rajasekhar, sorry I don't understand this sentence (both language and message). Can you please rephrase what you mean? Thanks.

Cheers
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