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ID:56700154
大小:628.59 KB
页数:8页
时间:2020-07-05
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1、SHT1x/SHT7xHumidity&TemperatureSensor-Relativehumidityandtemperaturesensors-Dewpoint-Fullycalibrated,digitaloutput-Excellentlong-termstability-Noexternalcomponentsrequired-Ultralowpowerconsumption-Surfacemountableor4-pinfullyinterchangeable-Smallsize-Automati
2、cpowerdownSHT1x/SHT7xProductSummaryTheSHTxxisasinglechiprelativehumidityandtemperaturemultisensormodulecomprisingacalibrateddigitaloutput.ApplicationofindustrialCMOSprocesseswithpatentedmicro-machining(CMOSens®technology)ensureshighestreliabilityandexcellentl
3、ongtermstability.Thedeviceincludesacapacitivepolymersensingelementforrelativehumidityandabandgaptemperaturesensor.Bothareseamlesslycoupledtoa14bitanalogtodigitalconverterandaserialinterfacecircuitonthesamechip.Thisresultsinsuperiorsignalquality,afastresponset
4、imeandinsensitivitytoexternaldisturbances(EMC)ataverycompetitiveprice.EachSHTxxisindividuallycalibratedinaprecisionhumiditychamberwithachilledmirrorhygrometerasreference.ThecalibrationcoefficientsareprogrammedintotheOTPmemory.Thesecoefficientsareusedinternall
5、yduringmeasurementstocalibratethesignalsfromthesensors.The2-wireserialinterfaceandinternalvoltageregulationallowseasyandfastsystemintegration.Itstinysizeandlowpowerconsumptionmakesittheultimatechoiceforeventhemostdemandingapplications.Thedeviceissuppliedineit
6、hsurface-mountableLCC(LeadlessChipCarrier)orasapluggable4-pinsingle-in-linetypepackage.Customerspecificpackagingoptionsmaybeavailableonrequest.Applications_HVAC_Automotive_ConsumerGoods_WeatherStations_Humidifiers_Dehumidifiers_Test&Measurement_DataLogging_Au
7、tomation_WhiteGoods_Medical2InterfaceSpecificationsFigure2Typicalapplicationcircuit2.1PowerPinsTheSHTxxrequiresavoltagesupplybetween2.4and5.5V.Afterpowerupthedeviceneeds11mstoreachits“sleep”state.Nocommandsshouldbesentbeforethattime.Powersupplypins(VDD,GND)ma
8、ybedecoupledwitha100nFcapacitor.2.2SerialInterface(Bidirectional2-wire)TheserialinterfaceoftheSHTxxisoptimizedforsensorreadoutandpowerconsumptionandisnotcompatiblewithI2Cinterfaces,seeFAQ
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