SGM8903

1SGM8903Capless3VrmsLineDriverwithAdjustableGainGENERALDESCRIPTIONTheSGM8903isa3VrmsPop&Click-lessstereolinedriverdesignedtoallowtheremovaloftheoutputdc-blockingcapacitorsforreducedcomponentcountandcost.Thedeviceisidealforsinglesupplyelectronicswheresizeandcostarecriticaldesignparameters.TheSGM8903iscapableofdriving3Vrmsintoa2.5kΩloadwith5Vsupplyvoltage.Thedevicehasdifferentialinputsandusesexternalgainsettingresistors,thatsupportsagainrangeof±1V/Vto±10V/V.Theuseofexternalgainresistorsalsoallowstheimplementationofa2ndorderlowpassfiltertocomplimentDAC'sandSOCconverters.TheSGM8903hasbuild-inshutdowncontrolforPop&Click-freeon/offcontrol.UsingtheSGM8903inaudioproductscanreducecomponentcountcomparedtotraditionalmethodsofgeneratinga3Vrmsoutput.TheSGM8903doesn'trequireapowersupplygreaterthan5Vtogenerateits8.5VPPoutput,nordoesitrequireasplitrailpowersupply.TheSGM8903integratesitsownchargepumptogenerateanegativesupplyrailthatprovidesaclean,pop&click-lessgroundbiased3Vrmsoutput.TheSGM8903isavailableina14pinTSSOPpackage.Itoperatesoveranambienttemperaturerangeof-40℃to+85℃.FEATURESzCaplessStructureEliminatesPop/ClicksEliminatesOutputDC-BlockingCapacitorsProvidesFlatFrequencyResponseDCto20kHzzLowNoiseandTHDTypicalSNR=107dBTypicalVN=8µVrmsTypicalTHD+N=0.001%(f=1kHz)z3VrmsOutputVoltageinto2.5kΩLoadwith5VSupplyVoltagezDifferentialInputAPPLICATIONSSet-TopBoxLCDTVBlue-RayDVD-PlayersHomeTheaterinaBoxSGMicroLimited(RL).......................................600ΩENtoGND.....................................................-0.3VtoVDD+0.3VOperatingTemperatureRange...........................-40℃to+85℃JunctionTemperature........................................................150℃StorageTemperature.......................................-65℃to+150℃LeadTemperature(soldering,10s)...................................260℃ESDSusceptibilityHBM..................................................................................4000VMM......................................................................................400VNOTE:StressesabovethoselistedunderAbsoluteMaximumRatingsmaycausepermanentdamagetothedevice.Thisisastressratingonly;functionaloperationofthedeviceattheseoranyotherconditionsabovethoseindicatedintheoperationalsectionofthisspecificationisnotimplied.Exposuretoabsolutemaximumratingconditionsforextendedperiodsmayaffectdevicereliability.CAUTIONThisintegratedcircuitcanbedamagedbyESDifyoudon’tpayattentiontoESDprotection.SGMICROrecommendsthatallintegratedcircuitsbehandledwithappropriateprecautions.Failuretoobserveproperhandlingandinstallationprocedurescancausedamage.ESDdamagecanrangefromsubtleperformancedegradationtocompletedevicefailure.Precisionintegratedcircuitsmaybemoresusceptibletodamagebecauseverysmallparametricchangescouldcausethedevicenottomeetitspublishedspecifications.SGMICROreservestherighttomakeanychangeincircuitdesign,specificationorotherrelatedthingsifnecessarywithoutnoticeatanytime.PleasecontactSGMICROsalesofficetogetthelastdatasheet.TYPICALOPERATIONCIRCUIT_+_+DACDACRIGHTLEFTSGM8903SOCCapless3VrmsLineDriverSGM8903withAdjustableGain３SGMicroLimited(TOPVIEW)1234567141312111098+INR-INR-INLENSGNDUVPPVSSOUTLCPPVDDPGNDCNOUTR+INLTSSOP14ChargePumpExternalUnderVoltageDetectorPINDESCRIPTIONPINNAMEFUNCTION1+INRRightchannelOPAMPpositiveinput2-INRRightchannelOPAMPnegativeinput3OUTRRightchannelOPAMPoutput4SGNDSignalground5ENEnableinput,activehigh6PVSSNegativesupplyvoltageoutput7CNChargepumpflyingcapacitornegativeterminal8CPChargepumpflyingcapacitorpositiveterminal9PVDDPositivesupply10PGNDPowerground11UVPUndervoltageprotectioninput12OUTLLeftchannelOPAMPoutput13-INLLeftchannelOPAMPnegativeinput14+INLLeftchannelOPAMPpositiveinputCapless3VrmsLineDriverSGM8903withAdjustableGain4SGMicroLimited(TA=25℃,unlessotherwisenoted.)PARAMETERCONDITIONSMINTYPMAXUNITSELECTRICALCHARACTERISTICSOutputOffsetVoltage(|VOS|)VDD=3Vto5V1.25mVSupplyRejectionRatio(PSRR)VDD=3Vto5V97dBHigh-LevelOutputVoltage(VOH)VDD=3.3V,RL=2.5kΩ3.18VLow-LevelOutputVoltage(VOL)VDD=3.3V,RL=2.5kΩ-3.1VHigh-LevelInputCurrent(EN)(|IIH|)VDD=5V,VI=VDD1µALow-LevelInputCurrent(EN)(|IIL|)VDD=5V,VI=0V1µAVDD=3.3V,Noload,EN=VDD8.511.3VDD=5V,Noload,EN=VDD1215SupplyCurrent(IDD)Shutdownmode,VDD=3Vto5V0.10.2mAOPERATINGCHARACTERISTICS(VDD=3.3V,RL=2.5kΩ,C(PUMP)=C(PVSS)=1µF,CIN=10µF,RIN=10kΩ,Rfb=20kΩ)THD=1%,VDD=3.3V,f=1kHz2.05THD=1%,VDD=5V,f=1kHz3.05OutputVoltage(OutputsInPhase)(VO)THD=1%,VDD=5V,f=1kHz,RL=100kΩ3.1VrmsVO=2Vrms,f=1kHz0.001TotalHarmonicDistortionPlusNoise(THD+N)VO=2Vrms,f=6.8kHz0.004%CrosstalkV