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Fast method for calculating voltage gain

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mhjedaboard

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salaam Every body,



is there a faster method for gain(Av0) derivation than using KVL-KCL ? (using KVL-KCL is too slow and complex way for a multistage amplifier.)


I have seen a method used for calculating voltage gain but I don't remember it and it was something like:


output resistance/imput loop resistance


thanks.
 
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SunnySkyguy

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Make sure Rf >> Rout impedance of Op Amp
eg use >>10K

same for CE amp
Av= Rc/Re

where Rc includes load of next stage

And if Re is bypassed with large C, then Re includes rBE and ESR of cap.
 
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