lec3part1_high freq response

lec3part1_high freq response - Amplifiers being studied are...

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Amplifiers being studied are intended for fabrication using IC technology Don't employ Coupling/By-pass capacitors IC cascade amplifier are directly coupled. Thus do not utilize large coupling capacitor Gain remains constant at its mid-band value A M down to zero frequency No gain reduction at low frequency. Gain falls off at high frequency due to internal capacitance
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High Frequency Response
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( 29 + - - - + + + - - - + + = Pn P P zn z z H s s s s s s s F ϖ 1 1 1 1 1 1 2 1 2 1 A (s) = A M F H (s)   A M DC gain neglecting effect of internal (open circuit) F H (s) takes into account the effect of internal capacitances .
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- - - + + - - - - + + = 2 2 2 1 2 2 2 1 1 1 2 1 1 1 z z p p H ϖ A  dominant  poles  exists,  if  the  lowest  frequency 
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lec3part1_high freq response - Amplifiers being studied are...

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