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模拟电路设计第6章.ppt

发布：2025-04-08约2.25千字共10页下载文档
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Chapter6FrequencyResponseofAmplifiers12

SimplePoleCopyright?TheMcGraw-HillCompanies,Inc.Permissionrequiredforreproductionordisplay.SlidespreparedbyTravisN.Blalock,UniversityofVirginia.FrequencyResponseCh.6#2vovi

MillerEffectCopyright?TheMcGraw-HillCompanies,Inc.Permissionrequiredforreproductionordisplay.SlidespreparedbyTravisN.Blalock,UniversityofVirginia.FrequencyResponseCh.6#3

MillerCapacitiveMultiplication

ApplicabilityofMiller’sTheorem

PolesandNodesCopyright?TheMcGraw-HillCompanies,Inc.Permissionrequiredforreproductionordisplay.SlidespreparedbyTravisN.Blalock,UniversityofVirginia.FrequencyResponseCh.6#6InteractingPolesNon-InteractingPoles

CommonGateCopyright?TheMcGraw-HillCompanies,Inc.Permissionrequiredforreproductionordisplay.SlidespreparedbyTravisN.Blalock,UniversityofVirginia.FrequencyResponseCh.6#7

CommonSourceCopyright?TheMcGraw-HillCompanies,Inc.Permissionrequiredforreproductionordisplay.SlidespreparedbyTravisN.Blalock,UniversityofVirginia.FrequencyResponseCh.6#8Neglectinginput/outputinteraction,

CommonSource(cont.)

CommonSource(cont.)

CommonSource(cont.)Righthalfplanezero,fromthenumeratorofvo/vi

SourceFollower(CommonDrain)

SourceFollowerInputImpedance

SourceFollower(cont.)Ataparticularfrequency,inputimpedanceincludesCGDinparallelwithseriescombinationofCGSandCLandanegativeresistanceequalto-gm/(CGSCL?2).

SourceFollowerOutputImpedance

SourceFollowerOutputImpedance(cont.)Outputimpedanceinductancedependentonsourceimpedance,RS!

SourceFollowerRingingOutputringingduetotunedcircuitformedwithCLandinductivecomponentofoutputimpedance.

CascodeStageCopyright?TheMcGraw-HillCompanies,Inc.Permissionrequiredforreproductionordisplay.SlidespreparedbyTravisN.Blalock,UniversityofVirginia.FrequencyResponseCh.6#18

CascodeStage(cont.)

D

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