雨课堂学堂云在线《模拟集成电路分析与设计（电子科大 ）》单元测试考核答案

注：不含主观题第1题单选题(1分)ForanpnBJT,conditionsforworkinginforwardactiveregion:_______AVBE>0,VBC>0BVBE>0,VBC<0CVBE<0,VBC>0DVBE<0,VBC<0第2题单选题(1分)ForaNMOS,itsmathematicalmodelforworkinginthetrioderegion:_______AID=un*Cox*W/L*[(VGS-VTH)VDS-VDS^2]BID=un*Cox*W/L*[(VGS-VTH)VDS-1/2VDS^2]CID=1/2*un*Cox*W/L*[(VGS-VTH)VDS-1/2VDS^2]DID=1/2*un*Cox*W/L*[2*(VGS-VTH)VDS-1/2VDS^2]第3题多选题(2分)Foroutputcharacteristic,choosethecorrectanswer:ForBJT,whenworkinforwardactiveregion,

Ic

().ForMOSFET,whenworkinsaturationregion,

ID

().A;B;C;D.正确答案：AD第4题多选题(2分)ComparisonbetweenMOSFETandBJT,choosethemainapplicationsfor:MOSFET:_______

Ahighfrequency;Blowpower;Clownoise;DVLSIcircuits正确答案：BD第二章作业第1题填空题(4分)Foranidealamplifier,AV=____，Rin=____，Ro=____，CMRR=____A.+∞

B.0正确答案：:["A"]正确答案：:["A"]正确答案：:["B"]正确答案：:["A"]第2题多选题(2分)Onesingletransistorcanbeusedas

()AAmplifier;Bsourcefollower;Ccascade;Dcurrentmirror.正确答案：ABC第3题单选题(1分)ForaBJTsingletransistoramplifiers,theinputresistanceis______andoutputresistance______.Acommonemitter<commonbase<commoncollector;commonemitter<commoncollector<commonbase;Bcommonbase<commonemitter<commoncollector;commoncollector<commonemitter=commonbase;Ccommonbase<commonemitter<commoncollector;commonemitter<commoncollector=commonbase;Dcommonbase<commoncollector<commonemitter;commoncollector<commonemitter<commonbase;第4题多选题(2分)

Usingthemillereffect,capacitanceCcanbeequivalenttoC1andC2C1=

,

C2=

AC(1+A)BC(

1+

)CC(1-A)DC(

1-)正确答案：AB第5题判断题(1分)Sourcefollowermainlyactsasacurrentbuffer

()第三章作业第1题单选题(1分).PleasechoosethemostsignificantdifferencebetweenWilsoncurrentmirrorandcascodecurrentmirror?()AOutputvoltageswingBFrequencyresponseCOutputresistanceDAccuracy第2题单选题(1分)What’stheadvantageofabasicdifferentialamplifierwithmosfetinputoverbipolarinputforsameresistiveload?()AHighergain;BLowerequivalentcurrentnoise;CLowerequivalentvoltagenoise;DWiderdifferentialinputrange.第3题单选题(1分)What’stheequivalentinputresistanceofthiscross-coupledstructure?()A2/gm2;B2/gm1;C2/(gm1-gm2);D2/(gm2-gm1)第4题单选题(1分)Foranidealcurrentsource,whatkindofcharacteristicisdesirable?()AZeroinputresistance,zerooutputresistanceBZeroinputresistance,infiniteoutputresistanceCInfiniteinputresistance,zerooutputresistanceDInfiniteinputresistance,zerooutputresistance第四章作业第1题多选题(2分)PleasechoosetheunitofPowerSpectrumDensity

(PSD)

().AVBV^2CV/HzDV^2/Hz正确答案：D第2题单选题(1分)HowtoreducearesistancethermalvoltagenoisePSDinalow-passnetwork?()AWorkinlowtemperatureBWorkinhightemperatureCIncreasefiltercapacitancesDDecreasefiltercapacitances第3题单选题(1分)HowtoreducearesistancethermalvoltagenoisePSDinalow-passnetwork?()AIncreaseresistanceBDecreaseresistancesCIncreasefiltercapacitancesDDecreasefiltercapacitances第4题单选题(1分)Assumingthebandwidthofalow-passsystemis,howmuchisitsnoisebandwidth?()

ABBWCD第五章作业第1题单选题(1分)Foratwonegativepoleoperationalamplifier,thenon-dominantpoleisabout3timestheGBW.Inthiscase,thephasemarginiscloseto()A45°;B50°;C70°;D90°第2题单选题(1分)Forathree-stageopamp,thenon-dominantpoleandthirdpoleisbettersetat()A2GBW,3GBW;B3GBW,4GBW;C2GB2,5GBW;D3GBW,5GBW第3题单选题(1分)Ifanoperationalamplifierisasinglepositivezeroamplifier,thegainslopeis____anditsphaseof_____isconstantforallfrequenciesbeyondthezero.A+20dB/dec,-90°B-20dB/dec,-90°C+20dB/dec,+90°D-20dB/dec,+90°第4题单选题(1分)Ifanoperationalamplifierisasinglenegativepoleamplifier,theslopeof_____ismaintainedtofrequenciesbeyonditsGBWanditsphaseof_____isconstantforallfrequenciesbeyondthepole.A-20dB/dec,+90°B+20dB/dec,-90°C-20dB/dec,-90°D+20dB/dec,+90°第六章作业第1题单选题(1分)FortheOTAshowninfigure063,itsCommon-modeinputvoltagerangewill()astheW/LofbothM1andM2increases.AIncrease;Bdecrease;Ckeepconstant.第2题单选题(1分)FortheOTAshowninfigure063,theSRforCLwill()astheW/LofbothM1andM2increases.AIncreaseBdecreaseCkeepconstant第3题判断题(1分)FortheOTAshowninfigure063,inordertoreducetheinputoffsetvoltage,thetransconductance()ofM3andM4shouldbedecreased.()第4题判断题(1分)FortheOTAshowninfigure0611,theminimuminputvoltagecanbelowerthanVSS.()第5题判断题(1分)TheSRoftheOTAshowninfigure0636isnotrelatedwithCL.()第七章作业第1题单选题(1分)ComparedtosimpleCMOSOTA,telescopicOTAshows()gain.Alarger;Bsmaller;Csame;Dcan’tdecided.第2题单选题(1分)What’sthelocationofdominantpoleoffoldedcascodeOTA?()Ainputnode;Bdrainofinputpair;Coutput;Dcurrentmirror第3题单选题(1分)FoldedcascodeOTAiswidelyusedinanalogcircuitdesign.Actuallyit’s()stageamplifierandeasilytobecompensated.Aone;Btwo;Cthree;DFour第4题判断题(1分)rsymmetricalOTA,theGBWcanbealwaysimprovedbyincreasing

currentfactor（）第八章作业第1题单选题(1分)TheGBWofamplifierinCMFBcircuitshouldbe()thandifferentialamplifier.Alarger;Bsmaller;Csame;Dcan’tdecided;第2题单选题(1分)WhenalinearMOSFETsisusedasCMFB,theoperationregionofMOSFETsare().AsaturationregionBlinearregionCcutoffregionDreversesaturationregion第3题判断题(1分)ComparedtosingleendCMOSOTA,thefulldifferentialamplifierneedsCMFBcircuit.()第4题判断题(1分)ThedifferentialinputrangeofCMFBamplifierwilllimitoutputswingofdifferentialamplifier.()第九章作业第1题单选题(1分)Inbasic3-stageamplifier,accordingtothetransferfunctionofopenloop,ifallthepolesarereal,p,qshouldbe()tomakesurephasemarginis60.A2,4;B3,5;C1,3;D5,6第2题单选题(1分)Inamulti-polesystem,therearecomplexpolesintheopenloop,thenintheclosedloopthere()Amustbecomplexpoles;Bshouldbenocomplexpoles;Cmaybecomplexpoles;Dshouldbeallrealpoles第3题单选题(1分)InNMC3-stageamplifier,thereare()A3poles,nozeros;B3poles,1zero;C2poles,1zero;D3poles,2zeros第4题单选题(1分)

In3-stagenestedmiller[NMC]CMOSOTA,thenumberofpolesinopenloopareA1B2C3D4第十章作业第1题单选题(1分)Inthemultiplying3currentmirror,whentheNMOSdifferentialisoff,theworkingcurrentofthePMOSdifferentialis().AIB;B2IB;C3IB;D4IB第2题单选题(1分)Inaweakinversionopampdesign,therelationshipbetweengmandIDSis().Asquarerelationship;Bexponentialrelationship;Clinearrelationship;Dsquarerootrelationship第3题单选题(1分)Inthezenordiodeop,theW/Loftheelectroniczenorisusuallydesignedas().Aarbitrarydesign;Bsameasdifferentialpair;C3timesthandifferentialpair;D6timesdifferentialpair第4题单选题(1分)WhenVddislowerthan1V,thetechniquefortherailtotailopis().AincreasethebiasedcurrentofdifferentialpairBdecreasethebiasedcurrentofdifferentialpairCtolevelshiftthevoltageofinputsignalDtoamplifytheinputsignal第十一章作业第1题单选题(1分)Shunt-shuntfeedbackcan()outputresistance,()inputresistance().Aincrease,decr