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Modeling Settling Time of OTA (Read 686 times)

packiaraj

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Posts: 28
India

Modeling Settling Time of OTA
Jan 03^rd, 2006, 2:33am

Hi Forum,
� � � � � � �Slewrate can be modeled by (Imax/Cc) maximum current limitation and Compensation Capacitance of OTA. But I am wondering how to model settling time which includes Slew Rate limitaion (Non-Linear portion - initial part of settling); Phase Margin at UGF, Parasitic poles and pole-zero doublet if any (Quasi Linear portion- later part of setlling) .......I want to see effect of these in Transient Simulation. Any idea or suggestion is most welcome.

Thanks,
-Packiaraj.V.

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Andrew Beckett Senior Fellow Offline Life, don't talk to me about Life... Posts: 1742 Bracknell, UK	Re: Modeling Settling Time of OTA Reply #1 - Jan 3^rd, 2006, 9:34pm Only time for a quick answer... Have you looked at the Ideal/Non-Ideal opamp model in the Cadence "modelwriter" tool. This might be a good place to get some hints from, in the code it produces? Regards, Andrew.
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packiaraj Junior Member Offline Posts: 28 India	Re: Modeling Settling Time of OTA Reply #2 - Jan 5^th, 2006, 8:07pm Hi Andrew, � � � � � � � Thanks ...."Model Writer" generated code includes Slew Rate........ but not settling time - Packiaraj.V.
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