LM34 Precision Fahrenheit Temperature Sensors (Rev. D)

1 ProductFolderSample &BuyTechnicalDocumentsTools &SoftwareSupport &CommunityLM34 SNIS161D MARCH2000 REVISEDJANUARY2016LM34 PrecisionFahrenheitTemperatureSensors1 Features3 DescriptionTheLM34seriesdevicesare precisionintegrated-1 CalibratedDirectlyin DegreesFahrenheitcircuittemperaturesenso rs,whoseoutputvoltageis F ScaleFactorlinearlyproportionalto the Fahrenheittemperature. F AccuracyAssured(at 77 F)TheLM34devicehasan advantageoverlineartemperaturesensorscal ibratedin degreesKelvin, Ratedfor Full 50 to 300 F Rangebecausethe useris not requiredto subtracta large Suitablefor RemoteApplicationsconstantvoltagefromits outputto obtainconvenient Low CostDue to externalcalibrationor trimmingto provide OperatesFrom5 to 30 Voltstypicalaccuraciesof 1/2 F at roomtemperatureand LessThan90- A CurrentDrain 1-1 2 F overa full 50 F to 300 F Temperature Low Self-Heating, F in Still assuredby trimmingand NonlinearityOnly F Typicalcalibrationat ,linearoutput,andpreciseinherent Low-ImpedanceOutput, for 1-mALoadcalibrationof the LM34devicemakesinterfacingtoreadoutor can be2 Applicationsusedwithsinglepowersupplieso r withplusand LM34devicedrawsonly75 A fromits supply,the devicehas verylow self- BatteryManagementheating,less F in still air.

2 HVACThe LM34deviceis ratedto operateovera 50 F to Appliances300 F temperaturerange,whilethe LM34 Cis ratedfor a 40 F to 230 F range(0 F withimprovedaccuracy).The LM34devicesare seriesis availablepackagedin hermeticTO-46transistorpackages;whilethe LM34C,LM34CA,and LM34 Dare availablein the LM34 Ddeviceis availablein an 8-lead,surface-mount, LM34deviceis a complementto the LM35device(Centigrade) (1)PARTNUMBERPACKAGEBODYSIZE(NOM)SOIC(8) (3) (3) (1) For all availablepackages,see the orderableaddendumatthe end of the (5 F toFull-RangeFahrenheitTemperatureSensor3 00 F)1An IMPORTANTNOTICEat the end of this datasheetaddressesavailability,warranty, changes,use in safety-criticalapplications,intellectual propertymattersand MARCH2000 Applicationand Pin Configurationand Deviceand :LM34 Aand :LM34,LM34C, Mechanical,Packaging,and RevisionHistoryChangesfromRevisionC (January2015)to RevisionDPage ChangedNDVP ackage(TO-46)pinoutfromTop Viewto (November2000)to RevisionCPage AddedESDR atingstable,FeatureDescriptionsection,De viceFunctionalModes,ApplicationandImplem entationsection,PowerSupplyRecommendatio nssection,Layoutsection,DeviceandDocumen tationSupportsection,andMechanical,Packa ging, 2000 2016,TexasInstrumentsIncorporatedProduct FolderLinks.

3 LM34+VSVOUTGND+ +VSVOUTGND t MARCH2000 REVISEDJANUARY20165 Pin Configurationand FunctionsNDVP ackage3-PInTO-46(BottomView)Caseis connectedto negativepin (GND)D Package8-PInSO8(TopView) No connectionLP Package3-PinTO-92(BottomView)Pin FunctionsPINTYPEDESCRIPTIONNAMETO46/NDVT O92/LPSO8/D+VS 8 POWERP ositivepowersupplypinVOUT 1 OTemperatureSensorAnalogOutputGND 4 GNDD evicegroundpin, connectto 5 No Connection67 Copyright 2000 2016,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback3 ProductFolderLinks:LM34LM34 SNIS161D MARCH2000 (1)(2)overoperatingfree-airtemperaturera nge(unlessotherwisenoted)MINMAXUNITS upplyvoltage35 1 VOutputcurrent10mATO-46 Package 76356 Storagetemperature,TstgTO-92 Package 76300 FSO-8 Package 65150(1)StressesbeyondthoselistedunderAb soluteMaximumRatingsmay causepermanentdamageto the stressratingsonly,whichdo not implyfunctionaloperationof the deviceat theseor any otherconditionsbeyondthoseindicatedunder RecommendedOperatingConditions.

4 Exposureto absolute-maximum-ratedconditionsfor extendedperiodsmay affectdevicereliability.(2)If Military/Aerospacespecifieddevicesare required,contactthe TexasInstrumentsSalesOffice/Distributors for (ESD)ElectrostaticdischargeHuman-bodymod el(HBM),per ANSI/ESDA/JEDECJS-001(1) 2500V(1)JEDEC documentJEP155statesthat 500-VHBM allowssafe manufacturingwith a (unlessotherwisenoted)MINMAXUNITLM34,LM3 4A 50300 SpecifiedoperatingtemperaturerangeLM34C, LM34CA 40230 F(TMIN TA TMAX)LM34D32212 SupplyVoltageRange(+VS) (1)NDV(TO-46)LP (TO-92)D (SO8)UNIT3 PINS3 PINS8 PINSR JAJunction-to-ambientthermalresistance72 0324400 F/WR JCJunction-to-casethermalresistance43 (1)For moreinformationabouttraditionaland new thermalmetrics,see theICPackageThermalMetricsapplicationrep ort, 2000 2016, MARCH2000 :LM34 Aand LM34 CAUnlessotherwisenoted,thesespecificatio nsapply: 50 F TJ 300 F for the LM34and LM34A; 40 F TJ 230 F for theLM34 Cand LM34CA.

5 And 32 F TJ 212 F for the 5 Vdc and ILOAD= 50 A in the circuitofFull-RangeFahrenheitTemperature sensor ; 6 Vdc for LM34and LM34 Afor 230 F TJ 300 F. Thesespecificationsalso applyfrom5 F to TMAXin the circuitofBasicFahrenheitTemperatureSenso r(5 Fto300 F).LM34 ALM34 CAPARAMETERTESTCONDITIONSUNITMINTYPMAXMI NTYPMAXT estedLimit(2) 11 11TA= 77 FDesignLimit(3) F 0 FDesignLimit 22 F (1)TestedLimit 22 22TA= TMAXD esignLimit F 22TA= TMIND esignLimit 33 F (4)DesignLimit FTA= 77 F (AverageDesignLimit+ FSlope)TA= 77 F+1010 TestedLimit 11 11TA= 77 FDesignLimitmV/mA0 IL 1 mA (5)TestedLimit0 IL 1 mADesignLimit 33 33mV/mA 77 FDesignLimitmV/V5 V VS 30 V regulation(5)TestedLimit5 V VS 30 VDesignLimit (1)Accuracyis definedas the errorbetweenthe outputvoltageand 10 mV/ F timesthe device s casetemperatureat specifiedconditionsofvoltage,current,and Temperature (expressedin F).(2)Testedlimitsare specifiedand 100%testedin production.

6 (3)Designlimitsare specified(but not 100%productiontested)overthe indicatedtemperatureand usedto calculateoutgoingqualitylevels.(4)Nonlin earityis definedas the deviationof the output-voltage-versus-temperaturecurvefr omthe best-fitstraightline overthe ratedtemperaturerangeof the device.(5)Regulationis measuredat constantjunctiontemperatureusingpulsetes tingwith a low duty outputdue to heatingeffectscan be computedby multiplyingthe internaldissipationby the 2000 2016,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback5 ProductFolderLinks:LM34LM34 SNIS161D MARCH2000 :LM34 Aand LM34CA(continued)Unlessotherwisenoted,th esespecificationsapply: 50 F TJ 300 F for the LM34and LM34A; 40 F TJ 230 F for theLM34 Cand LM34CA;and 32 F TJ 212 F for the 5 Vdc and ILOAD= 50 A in the circuitofFull-RangeFahrenheitTemperature sensor ; 6 Vdc for LM34and LM34 Afor 230 F TJ 300 F. Thesespecificationsalso applyfrom5 F to TMAXin the circuitofBasicFahrenheitTemperatureSenso r(5 Fto300 F).

7 LM34 ALM34 CAPARAMETERTESTCONDITIONSUNITMINTYPMAXMI NTYPMAXT estedLimit9090VS= 5 V, TA= 77 FDesignLimit A7575 TestedLimitVS= 5 VDesignLimit160139 A131116 Quiescentcurrent(6)TestedLimit9292VS= 30 V, TA= 77 FDesignLimit A7676 TestedLimitVS= 30 VDesignLimit163142 A132117 TestedLimit224 V VS 30 V, TA= 77 FDesignLimit quiescentcurrent(5)TestedLimit5 V VS 30 VDesignLimit33 A/ Fof circuitofBasicFahrenheitMinimumtemperatu reforTemperatureSensor(5 FtoDesignLimit55 Fratedaccuracy300 F), IL= 0TA= 77 F33 Long-termstabilityTJ= TMAXfor 1000hours F(6)Quiescentcurrentis definedin the circuitofBasicFahrenheitTemperatureSenso r(5 Fto300 F).6 SubmitDocumentationFeedbackCopyright 2000 2016, MARCH2000 :LM34,LM34C,and LM34 DUnlessotherwisenoted,thesespecification sapply: 50 F TJ 300 F for the LM34and LM34A; 40 F TJ 230 F for theLM34 Cand LM34CA;and +32 F TJ 212 F for the 5 Vdc and ILOAD= 50 A in the circuitofFull-RangeFahrenheitTemperature sensor ; 6 Vdc for LM34and LM34 Afor 230 F TJ 300 F.

8 Thesespecificationsalso applyfrom5 F to TMAXin the circuitofBasicFahrenheitTemperatureSenso r(5 Fto300 F).LM34LM34C,LM34 DPARAMETERCONDITIONSUNITMINTYPMAXMINTYPM AXT estedLimit(2) 22 22TA= 77 FDesignLimit(3) F 0 FDesignLimit 33 F 1 1 Accuracy,LM34,LM34C(1)TestedLimit 33TA= TMAXD esignLimit 33 F TMIND esignLimit 33 44 F 33TA= 77 FDesignLimit F ,LM34D(1)TA= TMAXD esignLimit 44 F TMIND esignLimit 44 F (4)DesignLimit 11 F ( FSlope)1010TA= 77 FTestedLimit IL 1 mADesignLimitmV/mA (5)TestedLimitTMIN TA 150 FDesignLimit 66mV/mA0 IL 1 mA 77 F,DesignLimitmV/V5 V VS 30 V regulation(5)TestedLimit5 V VS 30 VDesignLimit (1)Accuracyis definedas the errorbetweenthe outputvoltageand 10 mV/ F timesthe device s casetemperatureat specifiedconditionsofvoltage,current,and Temperature (expressedin F).(2)Testedlimitsare specifiedand 100%testedin production.(3)Designlimitsare specified(but not 100%productiontested)overthe indicatedtemperatureand usedto calculateoutgoingqualitylevels.

9 (4)Nonlinearityis definedas the deviationof the output-voltage-versus-temperaturecurvefr omthe best-fitstraightline overthe ratedtemperaturerangeof the device.(5)Regulationis measuredat constantjunctiontemperatureusingpulsetes tingwith a low duty outputdue to heatingeffectscan be computedby multiplyingthe internaldissipationby the 2000 2016,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback7 ProductFolderLinks:LM34LM34 SNIS161D MARCH2000 :LM34,LM34C,and LM34D(continued)Unlessotherwisenoted,the sespecificationsapply: 50 F TJ 300 F for the LM34and LM34A; 40 F TJ 230 F for theLM34 Cand LM34CA;and +32 F TJ 212 F for the 5 Vdc and ILOAD= 50 A in the circuitofFull-RangeFahrenheitTemperature sensor ; 6 Vdc for LM34and LM34 Afor 230 F TJ 300 F. Thesespecificationsalso applyfrom5 F to TMAXin the circuitofBasicFahrenheitTemperatureSenso r(5 Fto300 F).LM34LM34C,LM34 DPARAMETERCONDITIONSUNITMINTYPMAXMINTYPM AXT estedLimit100100VS= 5 V, TA= 77 FDesignLimit A7575 TestedLimitVS= 5 VDesignLimit176154 A131116 Quiescentcurrent(6)TestedLimit103103VS= 30 V, TA= 77 FDesignLimit A7676 TestedLimitVS= 30 VDesignLimit181159 A132117 TestedLimit334 V VS 30 V,DesignLimit ATA= +77 quiescentcurrent(5)TestedLimit5 V VS 30 VDesignLimit55 A/ Fof Ffor ratedaccuracyTemperatureSensor(5 Fto300 F), IL= 033 Long-termstabilityTJ= TMAXfor 1000hours F(6)Quiescentcurrentis definedin the circuitofBasicFahrenheitTemperatureSenso r(5 Fto300 F).

10 8 SubmitDocumentationFeedbackCopyright 2000 2016, MARCH2000 ThermalTimeConstantFigure1. ThermalResistanceJunctionto AirFigure4. ThermalResponsein StirredOil BathFigure3. ThermalResponsein Still AirFigure6. QuiescentCurrentvs Temperature (in CircuitofFigure5. MinimumSupplyVoltagevs TemperatureBasicFahrenheitTemperatureSen sor(5 F to 300 F))Copyright 2000 2016,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback9 ProductFolderLinks:LM34LM34 SNIS161D MARCH2000 (continued)Figure7. QuiescentCurrentvs TemperatureFigure8. Accuracyvs Temperature (Specified)(in CircuitofFull-RangeFahrenheitTemperature sensor ; VS= 5V, R1 = 100k)Figure10. NoiseVoltageFigure9. Accuracyvs Temperature (Specified)Figure11. Start-UpResponse10 SubmitDocumentationFeedbackCopyright 2000 2016, MARCH2000 REVISEDJANUARY20167 LM34seriesdevicesare precisionintegrated-circuittemperaturese nsors,whoseoutputvoltageis linearlyproportionalto the LM34devicehas an advantageoverlineartemperaturesensorscal ibratedin degreesKelvin,becausethe useris not requiredto subtracta largeconstantvoltagefromits outputto LM34devicedoesnot requireany externalcalibrationor trimmingto providetypicalaccuraciesof 1/2 F at roomtemperatureand 1-1 2 F overa full 50 F to 300 F assuredby trimmingand calibrationat the low outputimpedance,linearoutput,and preciseinherentcalibrationof the LM34devicemakesinterfacingto readoutor can be usedwith singlepowersuppliesor with plus and LM34devicedrawsonly 75 A fromits supply,the devicehas very low self-heating.