红外接收头规格书.pdf

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1、GOODTAKEHM338RPhotoModuleforPCMRemoteControlSystemsDescriptionTheHM338Risminiaturizedreceiverforinfraredremotecontrolsystems.PINdiodeandpreamplifierareassembledonleadframe,theepoxypackageisdesignedasIRfilter.Thedemodulatedoutputsignalcandirectlybedecodedbyamicroprocessor.Themainbenefitisthereli

2、ablefunctionevenindisturbedambientandtheprotectionagainstuncontrolledoutputpulses.FeaturesSpecialFeatures●PhotodetectorandPreamplifierinonepackage●Enhancedimmunityagainstallkindsof●InternalfilterforPCMfrequencydisturbancelight●TTLandCMOScompatibility●Nooccurrenceofdisturbancepulsesat●Outputacti

3、velowtheoutput●Lowpowerconsumption●Suitableburstlength≥10cycles/burstApplicationsTV,VTR,AcousticDevices,AirConditioner,CarStereoUnits,Computers,Interiorcontrollingappliances,andallappliancesthatrequireremotecontrollingBlockDiagramGOODTAKEHM338RApplicationCircuit*)recommendedtosuppresspowersuppl

4、ydisturbanceAbsoluteMaximumRatingsTamb=25℃ParameterTestConditionsSymbolValueUnitSupplyVoltage(Pin3)Vs6.0VSupplyCurrent(Pin3)Is5mAOutputVoltage(Pin1)Vo6.0VStorageTemperatureRangeTstg-30…+105℃OperatingTemperatureRangeTamb-25…+85℃PowerConsumption(Tamb≦85℃)ptot50mWSolderingTemperaturet≦5sTsd260℃Bas

5、icCharacteristics(Ta=25℃)ParameterTestConditionsSymbolMinTypMaxUnitSupplyCurrent(Pin3)Vs=5V,Ev=0ISD0.71.12mASupplyVoltage(Pin3)Vs2.75.5VTransmissionDistanceIRdiodeAT205,IF=400mAd20mOutputVoltageHigh(Pin1)VOH4.5VVs=5VOutputVoltageLow(Pin1)Cycle1.2mS,50%dutyVOL250mVLevelOutputPulseWidth(Pin1)TWH5

6、00800μsLevelOutputPulseWidthCycle1.2mS,50%dutyTWL500800μsCarrierfrequencyfo37.9kHzPeakWavelengthλ940nmDirectivityAngleofhalftransmissiondistanceφ1/2±45degGOODTAKEHM338RReliabilityTestTESTSAMPLEOKTESTITEMTESTTIMECONDITIONNUMNUMHighTemperatureStorageTa=+85℃t=240H2222LowTemperatureStorageTa=-25℃t=

7、240H2222SoakintosoldertubofResistancetosolderingheat1cycle5sec2222Tsd=260℃HBMC=100pF,ElectroStaticDischargeeachpintestonce2222R=1.5kΩ,2kV,HighTemperature/Humidity*Ta=+85℃,90%RHt=240H2222HeatCycle*-25℃~+85℃(0.5H)20cycle2222Note:*(e