THERMOPILE OTP-538UIntroductionTheOTP-538UisathermopilesensorinclassicTO-46housing.Thesensoriscomposedof116elementsofthermocoupleinseriesonafloatingmicro-membranehavinganactivediameterof545 m and with blacken surface to absorb the incident thermal infrared radiation, which induces avoltageresponseatoutputterminals. Thesensorchipisfabricatedbyauniquefront-surfacebulkmicromachining technology, which result in smaller size and faster to response ambienttemperaturechange.The IR window is a bandpass filter having its 50% cut-on wavelength at 5 m, and cut-down at14 m. ThesensorresponsesproportionallytotheincidentIRradiationandhasaconstantsignalresponseuptoitscut-offfrequency,whichislimitedbythesensorthermaltimeconstantoftensmillisecondrange.The OTP-538U thermopile sensor provides nearly Johnson-noise-limited performance, which canbe calculated by its ohmic series resistance.A thermistor element, with a lead connected toground,isalsoprovidedinsidetheTOpackageforambienttemperaturereference.Featuresz Non-contacttemperaturedetectionz Voltageoutput,easytotakesignalz Zeropowerconsumptionz WidedetectiontemperaturerangeApplicationsz MedicalApplication: Earthermometersz HomeFacility: Microwaveoven,Hairdryer,Safetysystem,Homesecurity,Refrigerator Airconditionerz IndustryApplication: Processmonitorandcontroller,Infrarednon-contactthermometersz AutomobileApplication: Thermalsensingsystem TableofContents1GeneralCharacteristics1.1 AbsoluteMaximumRatings1.2HandlingGuidelines2DeviceCharacteristics2.1 DeviceDescriptions2.2 SensorCharacteristics2.3 SignalOutputCharacteristics2.4 FrequencyResponse2.5 ThermistorCharacteristics2.6 OpticalCharacteristics2.7 FilterCharacteristics2.8 MechanicDrawingandPinAssignment3LiabilityStatementListofFiguresFigure1:Typicaloutputvoltageversusobjecttemperaturewithsensorat25 CFigure2:FrequencyresponseFigure3:FieldofviewcurveFigure4:TypicalspectraltransmittancecurveFigure5:MechanicaldrawingandpinassignmentListofTablesTable1:AbsolutemaximumratingsTable2:DevicecharacteristicsTable3:ThermopilesensorcharacteristicsTable4:TypicalnumericaldataofThermopile soutputvoltage(sensorat25 C)Table5:ThermistorinformationTable6:TabulatedthermistordataTable7:OpticalcharacteristicsTable8:Filterparameters Parameter DescriptionCap MetalcapwithintegratedIRwindowHeader TO46Leads (3isolated+1ground)pinswithsolderablegoldcoatingFilter Si-basedIRfilterInsulationgassealing Thesensorissealedhermeticallyinanitrogenenvironment. 若需詳細資料，請來電索取！