LA3160-E中文资料

AnyandallSANYOproductsdescribedorcontainedhereindonothavespecificationsthatcanhandleapplicationsthatrequireextremelyhighlevelsofreliability,suchaslife-supportsystems,aircraft’scontrolsystems,orotherapplicationswhosefailurecanbereasonablyexpectedtoresultinseriousphysicaland/ormaterialdamage.ConsultwithyourSANYOrepresentativenearestyoubeforeusinganySANYOproductsdescribedorcontainedhereininsuchapplications.SANYOassumesnoresponsibilityforequipmentfailuresthatresultfromusingproductsatvaluesthatexceed,evenmomentarily,ratedvalues(suchasmaximumratings,operatingconditionranges,orotherparameters)listedinproductsspecificationsofanyandallSANYOproductsdescribedorcontainedherein.MonolithicLinearIC2-ChannelPreamplifierForCarStereoOrderingnumber:ENN494FLA3160SANYOElectricCo.,Ltd.SemiconductorCompanyTOKYOOFFICETokyoBldg.,1-10,1Chome,Ueno,Taito-ku,TOKYO,110-8534JAPAN11200TH(KT)/N0493TH/7160TS/O137KI/8044KI/8250KI,TSNo.494–1/72.260.251.353.022.30.51min5.7max3.21.54.81.02.541.30.518PackageDimensionsunit:mm3016B-SIP8[LA3160]SANYO:SIP8Features•Twopreamplifiersonchip.•Fewerperipheralparts.•Lownoise.•8-pinSIPpackagefacilitatingeasymounting.˚C˚CRecommendedOperatingConditionsatTa=25˚CSpecificationsAbsoluteMaximumRatingsatTa=25˚CretemaraPlobmySsnoitidnoCsgnitaRtinUegatloVylppuSmumixaMVCCxam81VnoitapissiDrewoPelbawollAxamdP002WmerutarepmeTgnitarepOrpoT57+ot02–erutarepmeTegarotSgtsT521+ot04–retemaraPlobmySsnoitidnoCsgnitaRtinUegatloVylppuSVCC9VecnatsiseRdaoLRLk01WOperatingConditionsatTa=25˚C,VCC=9V,RL=10kW,Rg=600W,f=1kHz,NABretemaraPlobmySsnoitidnoCsgnitaRtinUnimpytxamnoitapissiDtnerruCICC46AmniaGegatloVGVpooldesolC53BdV,poolnepOOV77.0=6708BdegatloVtuptuOVO%1=DHT1.18.1VnoitrotsiDcinomraHlatoTDHTVOV5.0=1.03.0%ecnatsiseRtupnIrik07k001WegatloVesioNtupnItnelaviuqEVINk2.2=gRW52.10.2VμklatssorCTC05–56–BdLA3160No.494–2/7EquivalentCircuitBlockDiagramTestCircuit1:VO,VG,THD,ICC,riTestCircuit2:VGOTestCircuit3:NoiseLA3160No.494–3/7FunctionofExternalPartsC2,C4areinputcouplingcapacitors.InNABequalizeramplifier,thegainatlowfrequenciesishighand1/fnoiseinsidetheICisemphasizedasoutputnoise.Therefore,ifthereactanceofcapacitoratlowfrequenciesisincreased,thedependenceof1/fnoiseonthesignalsourceresistancecausestheoutputnoisevoltagetodeteriorate,andthevalueofreactancemustbemadesmallenoughascomparedwiththesignalsourceresistance.C2,C4alsoinfluencetheoperationstarttimeandtheadequatevalueofthesecapacitorsis10mF.(SinceC2,C4oflessthan4.7mFmaketheoperationstarttimelonger,useC2,C4of4.7mFormore).C5,C11areNFcapacitors.Thelowercut-offfrequencydependsonthevalueofthesecapacitors.Ifthelowercut-offfrequencyistakenasfL:C5(C11)=1/2p·fL·R2(R7)Ifthevalueofthiscapacitorismadelarger,theoperationstarttimeofamplifierismoredelayed.Theadequatevalueofcapacitoris47mF.ThefrequencycharacteristicoftheequalizeramplifierdependsonC6andR4,R3(C10andR5,R6).ThetimeconstantstoobtainthestandardNABcharacteristicareasshownbelow.C8isbiascapacitorforthepowerline.C8of47mFisinsertedatapointasclosetothepowersupplypin(pin4)aspossible.C1,C3areforpreventingradiointerferenceinthestrongelectricfield,interferenceattributabletoenginenoise,andblockingoscillationatthetimeoflargeamplitudeoperation.TheadequatevalueofC1,C3isapproximately1000pF.C7,C9areoutputcouplingcapacitors.TheadequatevalueofC7,C9is10mFSampleApplicationCircuit1:PreamplifierforCarStereos/mc5.9s/mc57.4)4R+3R(6Csμ0813sμ09516C3Rsμ09sμ021TapespeedLA3160No.494–4/7NABelementanddeterminationofgainSincetheDCfeedbackisprovidedbyR1,R2ofNABelement,whichbringsaboutDCoutputpotentialatpins3,6,itisimpossibletochangethevalueofR1,R2ofNABelementgreatly.Therefore,whendeterminingthegain,changeRNFwithR1,R2,C1(NABelement)keptconstant.(1)HowtoobtainRNFImpedanceZofNABelementisForageneralnegativefeedbackamplifiercircuit,A=Ao/(1+Aob)applies,andZ=A·RNFisobtainedunderconditionsofAoA,A1(b=RNF/(RNF+Z),Ao=open-loopgain,A=feedbackgain.Therefore,wecanuseanapproximationofRNF=Z/A.A=(VGfor1kHz)times,(SetR1,R2atapproximately100kW)EachtimeconstantofNABcharacteristic.(2)ExamplesofNABConstants(a)Tapespeed:9.5cm/sforan8-trackrecorder(Z,AG:atf=1kHz)(b)Tapespeed:4.75cm/sforacassettetaperecorder(c)Flatamplifier11/R1+jwC1Z=+R2=(R1+R2){}1+jwC1{R1R2/(R1+R2)}1+jwC1R1s/mc5.9s/mc57.41R,1C1Tsμ0813sμ0951)2R//1R(1C2Tsμ09sμ021TapespeedGV035304BdRFN08100165WGV035304BdRFN044042031WGV035304BdRFNk2.3k8.1k1kWLA3160No.494–5/7LA3160No.494–6/7SpecificationsofanyandallSANYOproductsdescribedorcontainedhereinstipulatetheperformance,characteristics,andfunctionsofthedescribedproductsintheindependentstate,andarenotguaranteesoftheperformance,characteristics,andfunctionsofthedescribedproductsasmountedinthecustomer'sproductsorequipment.Toverifysymptomsandstatesthatcannotbeevaluatedinanindependentdevice,thecustomershouldalwaysevaluateandtestdevicesmountedinthecustomer'sproductsorequipment.SANYOElectricCo.,Ltd.strivestosupplyhigh-qualityhigh-reliabilityproducts.However,anyandallsemiconductorproductsfailwithsomeprobability.Itispossiblethattheseprobabilisticfailurescouldgiverisetoaccidentsoreventsthatcouldendangerhum