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1、PreliminaryDatasheet4.5?LowVoltageSPDTSGM3157AnalogSwitchin6-pinSC70GENERALDESCRIPTIONFEATURES?VoltageOperation:1.8Vto5.5VTheSGM3157isasingle,bidirectional,single-pole/double-?On-Resistance:4.5Ω(typ)at5.0Vthrow(SPDT)CMOSanalogswitchesdesignedtooperatefromasingle+1.8Vto+5.5Vsupply.Itfea
2、tures?FastSwitchingTimehigh-bandwidth(300MHz)andlowON-resistance(4.5ΩtON20nstyp),Targetedapplicationsforaudioswitching.tOFF15ns?HighBandwidth:300MHzSGM3157featuresguaranteedon-resistancematching(0.3Ω?HighOff-Isolation:51dBat10MHzmax)betweenswitchesandguaranteedon-resistance?Rail-to-Rai
3、lOperationflatnessoverthesignalrange(2.3ΩTYP).Thisensures?TTL/CMOSCompatibleexcellentlinearityandlowdistortionwhenswitchingaudio?Break-Before-MakeSwitchingsignals.?ExtendedIndustrialTemperatureRange:–40°Cto85°CSGM3157isavailableinaSC70-6package.?Lead(Pb)FreeSC70-6PackagePINCONFIGURATIO
4、NS（TOPVIEW）SGM3157APPLICATIONSNO16IN3157PortableInstrumentationBattery-OperatedEquipmentGND25V+ComputerPeripheralsCellPhonesNC34COMPDAsMP3sSC70-6FUNCTIONTABLEPINDESCRIPTIONLOGICNONCNAMEPINFUNCTIONNO1Normally-openterminal0OFFONGND2ground1ONOFFNC3Normally-closedterminalCOM4Commonterminal
5、SwitchesShownForLogic“0”InputV+5PowersupplyDigitalcontrolpintoconnecttheCOMIN6terminaltotheNOorNCterminalsNote:NO,NCandCOMterminalmaybeaninputoroutput.ShengbangMicroelectronicsCo,LtdMay.2007Tel:86/451/84348461www.sg-micro.comELECTRICALCHARACTERISTICS(V+=+2.7Vto+3.6V,VIH=+1.4V,VIL=+0.5V
6、,TA=-40°Cto+85°C,TypicalvaluesareatV+=3.0V,TA=+25°C,unlessotherwisenoted.)PARAMETERSYMBOLCONDITIONSTEMPMINTPYMAXUNITSANALOGSWITCHAnalogSignalRangeVNO,VNC,VCOM-40°Cto+85°C0V+VV+=2.7V,VNOorVNC=1.5V,+25°C710ΩOn-ResistanceRONICOM=-10mA,TestCircuit1-40°Cto+85°C10.5ΩOn-ResistanceMatchBetween
7、V+=2.7V,VNOorVNC=1.5V,+25°C0.150.3Ω?RONChannelsICOM=-10mA,TestCircuit1-40°Cto+85°C0.4ΩV+=2.7V,VNOorVNC=1.0V,1.5V,+25°C34ΩOn-ResistanceFlatnessRFLAT(ON)2.0V,ICOM=-10mA,TestCircuit1-40°Cto+85°C4.3ΩV+=3.6V,VNOorVNC=0.3V,3.3V,SourceOFFLeakagecurrentINC(OFF),INO(OFF)-40°Cto+85°C1μAVCOM=0.
