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https://designers-guide.org/forum/YaBB.pl Design >> Analog Design >> Inductive Peaking https://designers-guide.org/forum/YaBB.pl?num=1320946539 Message started by summi on Nov 10th, 2011, 9:35am |
Title: Inductive Peaking Post by summi on Nov 10th, 2011, 9:35am Dear Forum, Can any one please tell me on what basis we have to choose inductor value in a peaking amplifier? There are some value's of 'm' in books, Which one is the best for design. Br, Summi. |
Title: Re: Inductive Peaking Post by raja.cedt on Nov 10th, 2011, 10:26am Hello, Please note that you have to describe your question, for example some prople may not be femilier with m, i guess it will be R*R*C/L. So coming to your Question it depends on the application, for example if you want to design pulse amplifiers, you have to chose inductor in such a way that m=3.1, for max BandWidth it should be 1.41. You find can more details in TH lee book. Thanks, Raj. |
Title: Re: Inductive Peaking Post by summi on Nov 10th, 2011, 10:35am Dear Raja.cedt, thanks for your reply. What is the max BW we can achive with the inductive peaking, is there any limit on that? Br, Summi. |
Title: Re: Inductive Peaking Post by raja.cedt on Nov 10th, 2011, 10:45am hello, without peaking, you can use 1.41 as i explained in the previous post. but you can get more BW but you have to compremise on peaking in magnitude responce. But accodring to bode integral max BW you can 2 times (accoring to theory) than without inductor case. I forgot where i read this concept, otherwise i would have given the reply. Thanks, Raj. |
Title: Re: Inductive Peaking Post by loose-electron on Nov 10th, 2011, 11:03am get a more detailed model of the inductors with parasitics in the models. This limits the "good" frequency range of the inductor. In a similar manner, get a model for the capacitor as well. using those you can determine an LC that will work properly at the frequency of interest. |
Title: Re: Inductive Peaking Post by Harry Poll on Nov 26th, 2011, 2:04am There are several new inductive-peaking techniques for bandwidth enhancement of low-voltage CMOS current amplifiers. The techniques improve the bandwidth by utilizing the resonance characteristics of LC network by employing bond wire capacitance or on-chip spiral inductors. Both series-peaking and shunt-peaking techniques are considered. |
Title: Re: Inductive Peaking Post by raja.cedt on Nov 26th, 2011, 10:06am hello Harry poll, i am more intersted to learn new techniques, i know seris, shunt and bridge T..any new thing apart from there? and what do you mean by current amplifiers? Thanks, raj. |
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