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Amplifier Gain (Read 3682 times)

neuro11 Junior Member Offline Posts: 30	Amplifier Gain Mar 27^th, 2013, 12:03am Hi, i had been following the TSMC OPAMP schematics design tutorial available online. However i have some problems getting the DC response/Gain shown in that tutorial. I am totally confused about the resulting plot. Can someone explain me a little about DC response gain.
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raja.cedt Senior Fellow Offline Posts: 1516 Germany	Re: Amplifier Gain Reply #1 - Mar 27^th, 2013, 12:39am Hello, what do you mean by DC response, do small signal analysis for dc gain and dynamics(poles and zero). May be you have start with some basics. Please post schematic. Very use-full link http://www.ee.iitm.ac.in/~nagendra/videolectures/doku.php Thanks, Raj.
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neuro11 Junior Member Offline Posts: 30	Re: Amplifier Gain Reply #2 - Mar 27^th, 2013, 12:45am thanks raja for your reply. I will check the link. I have attached the circuit Update: for better picture
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neuro11 Junior Member Offline Posts: 30	Re: Amplifier Gain Reply #3 - Mar 27^th, 2013, 12:51am the responnse
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raja.cedt Senior Fellow Offline Posts: 1516 Germany	Re: Amplifier Gain Reply #4 - Mar 27^th, 2013, 1:47am hello, looks fine from this graph, just find the derivative of this curve and see the small signal gain. YOu can only get small signal gain and max and min signals at the input, nothing more. Thanks, Raj.
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neuro11 Junior Member Offline Posts: 30	Re: Amplifier Gain Reply #5 - Mar 27^th, 2013, 7:03pm Hi, the circuit and the response are from the tutorial. I am struggling to get the response. Its not clear to me whether this response is from Vout vs Vgs (which is common mode). In that case why the Vout is 0 when Vgs is 0. I mean its not clear to me how i can plot this from the above circuit. Thanks
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Lex Senior Member Offline Posts: 201 Eindhoven, Holland	Re: Amplifier Gain Reply #6 - Mar 28^th, 2013, 1:46am Sweep voltage source V4
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