标签: lecture4

lecture4_04CMOS8¤>nOV4FN+FES1.BJTdevicestructure2.DCcharacteristics3.acsmallsignalequivalentcircuit4.FrequencyresponseLecture4,Oct.8,20041/20á1.Ch.1,P.R.GrayandR.G.Meyer,AnalysisandDesignofAnalogIntegratedCircuits,3rded.,1993,JohnWiley&Sons,Inc.BJTDeviceStructureBJTCross-sectionshowingtheparasitics2/20Figure1:BJTcross-sectionEbers-Moll&.9pn3/20Figure2:Ebers-Moll¨>BasedontheinteractingdiodejunctionsApplicabletoanyoperatingmodeFourmodelparameters:IES,ICS,αF,αR.Butbecauseofthereciprocityrelationship,onlythreeareindependent.p'X¤αFIES=αRICS(1)DCCharacteristics(1st-order)IC=αFIESexpVBEVT1ICSexpVBCVT10)(2)4/20Forward-activeoperationregionofannpnBJ……