模拟集成电路分析6罗萍

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1、AnalysisandDesignofAnalogIntegratedCircuitsChapter3Single-TransistorandMultiple-TransistorAmplifiers---Single-TransistorAmplifiers---Two-TransistorBJTAmplifier---Two-TransistorMOSFETAmplifier---DifferentialAmplifiers2013/9/12UESTCLuoPing1AnalysisandDesignofAnalogIntegratedCircuits1.TWO-TR

2、ANSISTORBJTAMPLIFIERS•Outline--BJTCC-CEamplifiers--Darlingtontransistoramplifier--Cascode2013/9/12UESTC-LuoPing2AnalysisandDesignofAnalogIntegratedCircuitsTheCC-CEConfigurationCircuit:Small-signalperformance:Rr(1)r(Increased)Rrin1o12outo2vvv(1)routout2o12A[g(r//R)][]g(r//

3、R)Vm2o2Lm2o2Lvvvr(1)rin2in1o12ii(1)Aoutb1o1o2(1)(Increased)Io1o2iiinb12013/9/12UESTC-LuoPing3AnalysisandDesignofAnalogIntegratedCircuitsDarlingtonConfigurationCircuit:Forwithacollectorresistanceof1RL:oioutA(1)(1)Rr(1)rIo1o2in1o12iinr//r12Rr//[r]r(ggg)o

4、uto2o1o2m1m2m1g(r//r)m12vvi[(1)](r//R)(r//R)outceb1o1o1o2o2Lo1o2o2LAVvvi[r(1)r](rr)inbeb11o121o122013/9/12UESTC-LuoPing4AnalysisandDesignofAnalogIntegratedCircuitsBJTCascodeAmplifierCircuitandsmall-signalmodel:itvtioutARinr1I21iinR[1g(r//r)]r(r//r)grrr

5、()outm2o12o2o12m22o22o2vvv1Aoutouta(gR)g//r//rgRVvvvm2Lm1g2o1m1Linainm22013/9/12UESTC-LuoPing5AnalysisandDesignofAnalogIntegratedCircuitsExample1-CalculationofBJTcascodecircuitCalaulatetheR,GandRofinMouttheBJTcascodecircuit.AssumethatI100A,100,r0C0b-4and1/(

6、gr)210.moSolution:ICg38.46mSm26mVRr/g26kin1om1ioutGg1/26038.46mSMm1vinr260k2Rrrgr130Mouto2o22m2o2442102102013/9/12UESTC-LuoPing6AnalysisandDesignofAnalogIntegratedCircuitsBJTCascodeAmplifierFrequencyResponseCircuitandsmall-signalmodelwithMillereffectappliedtoC

7、µ1andassumingv/v=-1:ain2013/9/12UESTC-LuoPing7AnalysisandDesignofAnalogIntegratedCircuitsMILLEREFFECTVsAVsandIssCVsVsosssoIssYssC1AVss2013/9/12UESTC-LuoPing8AnalysisandDesignofAnalogIntegratedCircuitsVsAVsandIssCVsVsosssoIs