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APDS-9930DigitalProximityandAmbientLightSensorDataSheetDescriptionTheAPDS-9930providesdigitalambientlightsensing(ALS),IRLEDandacompleteproximitydetectionsysteminasingle8pinpackage.Theproximityfunctionoffersplugandplaydetectionto100mm(withoutfrontglass)thuseliminatingtheneedforfactorycalibrationoftheendequipmentorsub-assembly.Theproximitydetectionfeatureoperateswellfrombrightsunlighttodarkrooms.Thewidedynamicrangealsoallowsforoperationinshortdistancedetectionbehinddarkglasssuchasacellphone.Inaddition,aninternalstatemachineprovidestheabilitytoputthedeviceintoalowpowermodeinbetweenALSandproximitymeasurementsprovidingverylowaveragepowerconsumption.TheALSprovidesaphotopicresponsetolightintensityinverylowlightconditionorbehindadarkfaceplate.TheAPDS-9930isparticularlyusefulfordisplayman-agementwiththepurposeofextendingbatterylifeandprovidingoptimumviewingindiverselightingconditions.Displaypanelandkeyboardbacklightingcanaccountforupto30to40percentoftotalplatformpower.TheALSfeaturesareidealforuseinnotebookPCs,LCDmonitors,flat-paneltelevisions,andcellphones.Theproximityfunctionistargetedspecificallytowardsnearfieldproximityapplications.Incellphones,theproximitydetectioncandetectwhentheuserpositionsthephoneclosetotheirear.Thedeviceisfastenoughtoprovideproximityinformationatahighrepetitionrateneededwhenansweringaphonecall.Thisprovidesbothimproved“green”powersavingcapabilityandtheaddedsecuritytolockthecomputerwhentheuserisnotpresent.Theadditionofthemicro-opticslenseswithinthemodule,providehighlyefficienttransmissionandreceptionofinfraredenergywhichlowersoverallpowerdissipation.OrderingInformationPartNumberPackagingQuantityAPDS-9930Tape&Reel2500perreelAPDS-9930#140Tape&Reel2500perreelFeaturesALS,IRLEDandProximityDetectorinanOpticalModule��AmbientLightSensing(ALS)–ApproximatesHumanEyeResponse–ProgrammableInterruptFunctionwithUpperandLowerThreshold–Upto16-BitResolution–HighSensitivityOperatesBehindDarkenedGlass–LowLuxPerformanceat0.01lux��ProximityDetection–FullyCalibratedto100mmDetection–IntegratedIRLEDandSynchronousLEDDriver–Eliminates“FactoryCalibration”ofProx–Coversa2000:1DynamicRange��ProgrammableWaitTimer–WaitStatePower–70�ATypical–Programmablefrom2.72msto>6Sec��I2CInterfaceCompatible–Upto400kHz(I2CFast-Mode)–DedicatedInterruptPin��SleepModePower-2.6�ATypical��SmallPackageL3.94xW2.36xH1.35mmApplications��CellPhoneBacklightDimming��CellPhoneTouch-screenDisable��Notebook/MonitorSecurity��AutomaticSpeakerphoneEnable��AutomaticMenuPop-up��DigitalCameraEyeSensor7-SCL6-GND5-LEDA8-VDD1-SDA2-INT3-LDR4-LEDK2FunctionalBlockDiagramUpperThresholdLowerThresholdUpperThresholdLowerThresholdInterruptI2CInterfaceLEDRegulatedConstantCurrentSinkControlLogicALSADCDataProxDetectADCINTSDASCLVDDGNDLDRLEDKLEDAProxIRLEDCh0Ch1DataDetailedDescriptionTheAPDS-9930light-to-digitaldeviceprovideson-chipCh0andCh1diodes,integratingamplifiers,ADCs,accumu-lators,clocks,buffers,comparators,astatemachineandanI2Cinterface.EachdevicecombinesoneCh0photodiode(visibleplusinfrared)andoneCh1infrared-responding(IR)photodiode.TwointegratingADCssimultaneouslyconverttheamplifiedphotodiodecurrentstoadigitalvalueprovidingupto16-bitsofresolution.Uponcompletionoftheconversioncycle,theconversionresultistransferredtotheCh0andCH1dataregisters.Thisdigitaloutputcanbereadbyamicroprocessorwheretheilluminance(ambientlightlevel)inLuxisderivedusinganempiricalformulatoapproximatethehumaneyeresponse.Communicationtothedeviceisaccomplishedthroughafast(upto400kHz),two-wireI2Cserialbusforeasycon-nectiontoamicrocontrollerorembeddedcontroller.ThedigitaloutputoftheAPDS-9930deviceisinherentlymoreimmunetonoisewhencomparedtoananaloginterface.TheAPDS-9930providesaseparatepinforlevel-styleinterrupts.Wheninterruptsareenabledandapre-setvalueisexceeded,theinterruptpinisassertedandremainsasserteduntilclearedbythecontrollingfirmware.Theinterruptfeaturesimplifiesandimprovessystemefficiencybyeliminatingtheneedtopollasensorforalightintensityorproximityvalue.AninterruptisgeneratedwhenthevalueofanALSorproximityconversionexceedseitheranupperorlowerthreshold.Additionally,apro-grammableinterruptpersistencefeatureallowstheusertodeterminehowmanyconsecutiveexceededthresholdsarenecessarytotriggeraninterrupt.InterruptthresholdsandpersistencesettingsareconfiguredindependentlyforbothALSandproximity.Proximitydetectionisfullyprovidedwithan850nmIRLED.AninternalLEDdriver(LDR)pin,isjumperconnectedtotheLEDcathode(LEDK)toprovideafactorycalibratedproximityof100+/-20mm.Thisisaccomplishedwithaproprietarycurrentcalibrationtechniquethataccountsforallvariancesinsilicon,optics,packageandmostimpor-tantlyIRLEDoutputpower.Thiswilleliminateorgreatlyreducetheneedforfactorycalibrationthatisrequiredformostdiscreteproximitysensorsolutions.WhiletheAPDS-9930isfactorycalibratedatagivenpulsecount,thenumberofproximityLEDpulsescanbeprogrammedfrom1to255pulses,whichwillallowgreaterproximitydistancestobeachieved.Eachpulsehasa16�speriod.3I/OPinsConfigurationPINNAMETYPEDESCRIPTION1SDAI/OI2CserialdataI/Oterminal–serialdataI/OforI2C.2INTOInterrupt–opendrain.3LDRILEDdriverforproximityemitter–upto100mA,opendrain.4LEDKOLEDCathode,connecttoLDRpininmostsystemstouseinternalLEDdrivercircuit5LEDAILEDAnode,connecttoVBATTonPCB6GNDPowersupplyground.AllvoltagesarereferencedtoGND.7SCLII2Cserialclockinputterminal–clocksignalforI2Cserialdata.8VDDPowerSupplyvoltage.AbsoluteMaximumRatingsoveroperatingfree-airtemperaturerange(unlessotherwisenoted)†ParameterSymbolMinMaxUnitsTestConditionsPowerSupplyvoltageVDD3.8V[1]Digitalvoltagerange-0.53.8VDigitaloutputcurrentIO-120mAStoragetemperaturerangeTstg-4085°C†Stressesbeyondthoselistedunder“absolutemaximumratings”maycausepermanentdamagetothedevice.Thesearestressratingsonlyandfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunder“recommendedoperatingconditions”isnotimplied.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.Note:1.AllvoltagesarewithrespecttoGND.RecommendedOperatingConditionsParameterSymbolMinTypMaxUnitsOperatingAmbientTemperatureTA-3085°CSupplyvoltageVDD2.23.03.6VSupplyVoltageAccuracy,VDDtotalerrorincludingtransients-3+3%LEDSupplyVoltageVBATT2.54.5V4OperatingCharacteristics,VDD=3V,TA=25°C(unlessotherwisenoted)ParameterSymbolMinTypMaxUnitsTestConditionsSupplycurrent[1]IDD175250�AActive(ATIME=0xdb,100ms)70WaitMode2.64.0SleepModeINTSDAoutputlowvoltageVOL00.4V3mAsinkcurrent00.66mAsinkcurrentLeakagecurrent,SDA,SCL,INTPinsILEAK-55�ASCL,SDAinputhighvoltageVIH1.7VDDVSCL,SDAinputlowvoltage,VIL0.54VOscillatorfrequencyfosc705750795kHzPON=1Note:1.ThepowerconsumptionisraisedbytheprogrammedamountofProximityLEDDriveduringthe8ustheLEDpulseison.ThenominalandmaximumvaluesareshownunderProximityCharacteristics.TheretheIDDsupplycurrentisIDDActive+ProximityLEDDriveprogrammedvalue.ALSCharacteristics,VDD=3V,TA=25°C,Gain=16,AEN=1,ALSREDUCE=0(unlessotherwisenoted)ParameterChannelMinTypMaxUnitsTestConditionsDarkALSADCcountvalueCh0005countsEe=0,AGAIN=120x,ATIME=0xDB(100ms)Ch1005ALSADCIntegrationTimeStepSize2.582.722.90msATIME=0xffALSADCNumberofIntegrationSteps1256stepsFullScaleADCCountsperStep1023countsFullscaleADCcountvalue65535countsATIME=0xC0ALSADCcountvalueCh0400050006000counts�p=640nm,Ee=56�W/cm2,ATIME=0xF6(27ms),GAIN=16xCh1790Ch0400050006000�p=850nm,Ee=79�W/cm2,ATIME=0xF6(27ms),GAIN=16xCh12800ALSADCcountvalueratio:Ch1/Ch010.815.820.8%�p=640nm,ATIME=0xF6(27ms)415668�p=850nm,ATIME=0xF6(27ms)Gainscaling,relativeto1xgainsetting-55%8xforbothALSREDUCE=0or1-5516xforbothALSREDUCE=0or1-55120xforbothALSREDUCE=0or1Notes:1.Opticalmeasurementsaremadeusingsmall-angleincidentradiationfromlight-emittingdiodeopticalsources.Visible640nmLEDsandinfrared850nmLEDsareusedforfinalproducttestingforcompatibilitywithhigh-volumeproduction.2.The640nmirradianceEeissuppliedbyanAlInGaPlight-emittingdiodewiththefollowingcharacteristics:peakwavelength=640nmandspectralhalfwidth½=17nm.3.The850nmirradianceEeissuppliedbyaGaAslight-emittingdiodewiththefollowingcharacteristics:peakwavelength=850nmandspectralhalfwidth½=40nm.4.Thespecifiedlightintensityis100%modulatedbythepulseoutputofthedevicesothatduringthepulseoutputlowtime,thelightintensityisatthespecifiedlevel,andzerootherwise.5ProximityCharacteristics,VDD=3V,TA=25°C,PGAIN=1,PEN=1(unlessotherwisenoted)ParameterMinTypMaxUnitsTestConditionsIDDSupplycurrent–LDRPulseOn3mAADCConversionTimeStepSize2.72msPTIME=0xffADCNumberofIntegrationSteps1stepsPTIME=0xffFullScaleADCCounts1023countsPTIME=0xffProximityIRLEDPulseCount0255pulsesProximityPulsePeriod16.3�sProximityPulse–LEDOnTime7.2�sProximityLEDDrive100mAPDRIVE=0ISINKSinkcurrent@600mV,LDRPin50PDRIVE=125PDRIVE=212.5PDRIVE=3ProximityADCcountvalue,noobject100200countsDedicatedpowersupplyVBatt=3VLEDdriving8pulses,PDRIVE=00,PGAIN=10,openview(noglass)andnoreflectiveobjectabovethemodule.ProximityADCcountvalue,100mmdistanceobject416520624countsReflectingobject–73mmx83mmKodak90%greycard,100mmdistance,LEDdriving8pulses,PDRIVE=00,PGAIN=10,openview(noglass)abovethemodule.IRLEDCharacteristics,VDD=3V,TA=25CParameterMinTypMaxUnitsTestConditionsPeakWavelength,�P850nmIF=20mASpectrumWidth,HalfPower,��40nmIF=20mAOpticalRiseTime,TR20nsIFP=100mAOpticalFallTime,TF20nsIFP=100mAWaitCharacteristics,VDD=3V,TA=25°C,Gain=16,WEN=1(unlessotherwisenoted)ParameterMinTypMaxUnitsTestConditionsWaitStepSize2.72msWTIME=0xffWaitNumberofStep1256steps6CharacteristicsoftheSDAandSCLbuslines,VDD=3V,TA=25°C(unlessotherwisenoted)†ParameterSymbolSTANDARD-MODEFAST-MODEUnitsMin.Max.Min.Max.SCLclockfrequencyfSCL01000400kHzHoldtime(repeated)STARTcondition.Afterthisperiod,thefirstclockpulseisgeneratedtHD;STA4.0–0.6–�sLOWperiodoftheSCLclocktLOW4.7–1.3–�sHIGHperiodoftheSCLclocktHIGH4.0–0.6–�sSet-uptimeforarepeatedSTARTconditiontSU;STA4.7–0.6–�sDataholdtimetHD;DAT0–0–nsDataset-uptimetSU;DAT250–100–nsRisetimeofbothSDAandSCLsignalstr–1000–300nsFalltimeofbothSDAandSCLsignalstf–300–300nsSet-uptimeforSTOPconditiontSU;STO4.0–0.6–�sBusfreetimebetweenaSTOPandSTARTconditiontBUF4.7–1.3–�sCapacitiveloadforeachbuslineCb–400–400pFNoisemarginattheLOWlevelforeachconnecteddevice(includinghysteresis)VnL0.1VBUS–0.1VBUS–VNoisemarginattheHIGHlevelforeachconnecteddevice(includinghysteresis)VnH0.2VBUS–0.2VBUS–V†Specifiedbydesignandcharacterization;notproductiontested.SSrtSU;STOtSU;STAtHD;STAtHIGHtLOWtSU;DATtHD;DATtfSDASCLPStBUFtrtftrtSPtHD;STAMSC610SCLSDAFigure1.I2CBusTimingDiagram7Figure2.SpectralResponseFigure3a.ALSSensorLUXvs.MeterLUXusingWhiteLightFigure3b.ALSSensorLUXvs.MeterLUXusingIncandescentLightFigure3c.ALSSensorLUXvs.MeterLUXusingLowLuxWhiteLightFigure4a.NormalizedIDDvs.VDDFigure4b.NormalizedIDDvs.TemperatureFigure5a.NormalizedPDResponsitivityvs.AngularDisplacement00.020.040.060.080.100.010.020.030.040.050.060.070.080.090.1AvgSensorLUXMeterLUX050001000015000200002500030000050001000015000200002500030000AvgSensorLUXMeterLUX030060090012001500030060090012001500AvgSensorLUXMeterLUX00.20.40.60.811.230040050060070080090010001100NormalizedResponsitivityWavelength(nm)CH0CH1NormalizedIDD@3V25°C0.600.700.800.901.001.101.201.301.4022.22.42.62.833.23.43.63.8VDD(V)0.800.850.900.951.001.051.101.151.20-60-40-20020406080100NormalizedIDD@3VTemperature(°C)00.20.40.60.811.2-90-70-50-30-101030507090NormalizedResponsitivityAngle(Deg)00.20.40.60.811.2-50-40-30-20-1001020304050NormalizedRadiantIntensityAngle(Deg)Figure5b.NormalizedLEDAngularEmittingProfile8PRINCIPLESOFOPERATIONSystemStateMachineTheAPDS-9930providescontrolofALS,proximitydetectionandpowermanagementfunctionalitythroughaninternalstatemachine.Afterapower-on-reset,thedeviceisinthesleepmode.AssoonasthePONbitisset,thedevicewillmovetothestartstate.ItwillthencontinuethroughtheProx,WaitandALSstates.Ifthesestatesareenabled,thedevicewillexecuteeachfunction.IfthePONbitissettoa0,thestatemachinewillcontinueuntilallconversionsarecompletedandthengointoalowpowersleepmode.Figure6.SimplifiedStateDiagramCh0andCh1DiodesConventionalsilicondetectorsrespondstronglytoinfraredlight,whichthehumaneyedoesnotsee.Thiscanleadtosignificanterrorwhentheinfraredcontentoftheambientlightishigh(suchaswithincandescentlighting)duetothedifferencebetweenthesilicondetectorresponseandthebrightnessperceivedbythehumaneye.ThisproblemisovercomeintheAPDS-9930throughtheuseoftwophotodiodes.Oneofthephotodiodes,referredtoastheCh0channel,issensitivetobothvisibleandinfraredlightwhilethesecondphotodiodeissensitiveprimarilytoinfraredlight.TwointegratingADCsconvertthephotodiodecurrentstodigitaloutputs.TheCH1DATAdigitalvalueisusedtocompensatefortheeffectoftheinfraredcomponentoflightontheCH0DATAdigitalvalue.TheADCdigitaloutputsfromthetwochannelsareusedinaformulatoobtainavaluethatapproximatesthehumaneyeresponseinunitsofLux.ALSOperationTheALSenginecontainsALSgaincontrol(AGAIN)andtwointegratinganalog-to-digitalconverters(ADC)fortheCh0andCh1photodiodes.TheALSintegrationtime(ALSIT)impactsboththeresolutionandthesensitivityoftheALSreading.Integrationofbothchannelsoccurssimultaneouslyanduponcompletionoftheconversioncycle,theresultsaretransferredtotheCh0andCH1dataregisters(Ch0DATAxandCh1DATAx).Thisdataisalsoreferredtoaschannel“count”.Thetransfersaredouble-bufferedtoensurethatinvaliddataisnotreadduringthetransfer.Afterthetransfer,thedeviceautomaticallymovestothenextstateinaccordancewiththeconfiguredstatemachine.Figure7.ALSOperationSleepStartWaitALSProxPON=1(rO:b0)PON=0(rO:b0)ALSControlCh0ADCCh0Ch1ATIME(r0x01),0xffto0x00Ch0DataCh1ADCCh1DataCh0DATAH(r0x15),Ch0DATAL(r0x14)AGAIN(r0xOF,b1:0),1x,8x,16x,120xGainCh1DATAH(r0x17),Ch1DATAL(r0x16)NOTE:Inthisdocument,thenomenclatureusesthebitfieldnameinitalicsfollowedbytheregisternumberandbitnumbertoallowtheusertoeasilyidentifytheregisterandbitthatcontrolsthefunction.Forexample,thepoweron(PON)isinregister0,bit0.ThisisrepresentedasPON(r0:b0).9TheALSTimingregistervalue(ATIME)forprogrammingtheintegrationtime(ALSIT)isa2’scomplementvalues.TheALSTimingregistervaluecanbecalculatedasfollows:ATIME=256–ALSIT/2.72msInversely,theintegrationtimecanbecalculatedfromtheregistervalueasfollows:ALSIT=2.72ms*(256–ATIME)Forexample,ifa100msintegrationtimeisneeded,thedeviceneedstobeprogrammedto:ATIME=256–(100/2.72)=256–37=219=0xDBConversely,theprogrammedvalueof0xC0wouldcorrespondto:ALSIT=(256–0xC0)*2.72=64*2.72=172ms.Note:2.72mscanbeestimatedas87/32.Multiplyby87theshiftby5bits.CalculatingALSLuxDefinition:CH0DATA=256*Ch0DATAH(r0x15)+Ch0DATAL(r0x14)CH1DATA=256*Ch1DATAH(r0x17)+Ch1DATAL(r0x16)IAC=IRAdjustedCountLPC=LuxperCountALSIT=ALSIntegrationTime(ms)AGAIN=ALSGainDF=DeviceFactor,DF=52forAPDS-9930GA=Glass(orLens)AttenuationFactorB,C,D–CoefficientsLuxEquation:IAC1=CH0DATA–BxCH1DATAIAC2=CxCH0DATA–DxCH1DATAIAC=Max(IAC1,IAC2,0)LPC=GAxDF/(ALSIT×AGAIN)Lux=IACxLPCCoefficientsinopenair:GA=0.49B=1.862C=0.746D=1.291SampleLuxCalculationinOpenAirAssumethefollowingconstants:ALSIT=400AGAIN=1LPC=GAxDF/(ALSIT×AGAIN)LPC=0.49x52/(400x1)LPC=0.06Assumethefollowingmeasurements:CH0DATA=5000CH1DATA=525Then:IAC1=5000–1.862x525=4022IAC2=0.746x5000–1.291x525=3052IAC=Max(4022,3052,0)=4022Lux:Lux=IACXLPCLux=4022X0.06Lux=256Note:pleaserefertoapplicationnoteforcoefficientGA,B,CandDcalculationwithwindow.10RecommendALSOperationsFigure8.GainandIntegrationTimetoLuxwithoutIRWiththeprogrammingversatilityoftheintegrationtimeandgain,itcanbedifficulttounderstandwhentousethedifferentmodes.Figure8showsalog-logplotoftheLuxvs.integrationtimeandgainwithaspectralfactorofunityandnoIRpresent.Themaximumilluminancewhichcanbemeasuredis~30kLuxwithnoIRpresent.Theinterceptwithacountof1showstheresolutionofeachsetting.TheLuxvaluesinthetableincreaseastheSFincreases(spectralattenu-ationincreases).Forexample,ifa10%transmissiveglassisused,theLuxvalueswouldallbemultipliedby10.TheLuxvaluesinthetabledecreaseastheIRFactordecreases.Forexample,witha10%IRFactor,whichcorrespondstoastrongincandescentlight,theLuxvaluewouldneedtobedividedby10.Therearemanyfactorsthatwillimpactthedecisiononwhichvaluetouseforintegrationtimeandgain.Oneofthefirstfactorsis50/60Hzripplerejectionforfluorescentlighting.Theprogrammedvalueneedstobemultiplesof10/8.3msorthehalfcycletime.Bothfrequenciescanberejectedwithaprogrammedvalueof50ms(ATIME=0xED).Withthisvalue,theresolutionwillbe1.3Luxpercount.Ifhigherresolutionisneeded,alongerintegrationtimemaybeneeded.Inthiscase,theintegrationtimeshouldbeprogrammedinmultiplesof50.Thelightlevelisthenextdeterminingfactorforconfig-uringdevicesettings.Underbrightconditions,thecountwillbefairlyhigh.Ifalowlightmeasurementisneeded,ahighergainand/orlongerintegrationtimewillbeneeded.Asageneralrule,itisrecommendedtohaveaCh0channelcountofatleast10toaccuratelyapplytheLuxequation.Thedigitalaccumulationislimitedto16bits,whichoccursatanintegrationtimeof173ms.Thisisthemaximumrecommendedprogrammedintegrationtimebeforeincreasingthegain.(150msisthemaximumtoreducethefluorescentripple.)ProximityDetectionProximitysensingusesaninternalIRLEDlightsourcetoemitlightwhichisthenviewedbytheintegratedlightdetectortomeasuretheamountofreflectedlightwhenanobjectisinthelightpath.Theamountoflightdetectedfromareflectedsurfacecanthenbeusedtodetermineanobject’sproximitytothesensor.TheAPDS-9930isfactorycalibratedtomeettherequirementofproximitysensingof100+/-20mm,thuseliminatingtheneedforfactorycalibrationoftheendequipment.WhentheAPDS-9930isplacedbehindatypicalglasssurface,theproximitydetectionachievedisaround25to40mm,thusprovidinganidealtouch-screendisable.TheAPDS-9930hascontrolsforthenumberofIRpulses(PPCOUNT),theintegrationtime(PTIME),theLEDdrivecurrent(PDRIVE)andthephotodiodeconfiguration(PDIODE).Attheendoftheintegrationcycle,theresultsarelatchedintotheproximitydata(PDATA)register.TheLEDdrivecurrentiscontrolledbyaregulatedcurrentsinkontheLDRpin.ThisfeatureeliminatestheneedtouseacurrentlimitingresistortocontrolLEDcurrent.TheLEDdrivecurrentcanbeconfiguredfor12.5mA,25mA,50mA,or100mA.ForhigherLEDdriverequirements,anexternalPtypetransistorcanbeusedtocontroltheLEDcurrent.ThenumberofLEDpulsescanbeprogrammedtoavalueof1to255pulsesasneeded.IncreasingthenumberofLEDpulsesatagivencurrentwillincreasethesensorsen-sitivity.Sensitivitygrowsbythesquarerootofthenumberofpulses.Eachpulsehasa16�Speriod.Theproximityintegrationtime(PTIME)istheperiodoftimethattheinternalADCconvertstheanalogsignaltoadigitalcount.ItisrecommendthatthisbesettoaminimumofPTIME=0xFFor2.72ms.Figure9.ProximityIRLEDWaveformLEDOffIRLEDPulsesSubtractBackgroundAddIR+BackgroundLEDOn16Ms110100100010000100000CH0Counts0.010.1110100100010000100000LUX50ms,1/6x50ms,1x50ms,16x400ms,16x400ms,120x696ms,120x11OpticalDesignConsiderationsTheAPDS-9930simplifiestheopticalsystemdesignbyeliminatingtheneedforlightpipesandimprovessystemopticalefficiencybyprovidingaperturesandpackageshieldingwhichwillreducecrosstalkwhenplacedinthefinalsystem.ByreducingtheIRLEDtoglasssurfacecrosstalk,proximityperformanceisgreatlyimprovedandenablesawiderangeofcellphoneapplicationsutilizingtheAPDS-9930.Themodulepackagedesignhasbeenoptimizedforminimumpackagefootprintandshortdistanceproximityof100mmtypical.Thespacingbetweentheglasssurfaceandpackagetopsurfaceiscriticaltocontrollingthecrosstalk.Ifthepackagetotopsurfacespacinggap,windowthicknessandtransmittancearemet,thereshouldbenoneedtoaddadditionalcom-ponents(suchasabarrier)betweentheLEDandphoto-diode.Thuswithsomesimplemechanicaldesignimple-mentations,theAPDS-9930willperformwellintheendequipmentsystem.APDS-9930ModuleOptimizeddesignparameters��Windowthickness,t≤1.0mm��Airgap,g≤1.0mm��AssumingwindowIRtransmittance90%TheAPDS-9930isavailableinalowprofilepackagethatcontainsopticswhichprovidesopticalgainonbothttheLEDandthesensorsideofthepackage.ThedevicehasapackageZheightof1.35mmandwillsupportairgapof<=1.0mmbetweentheglassandthe