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1MotorolaSensorDeviceData $ $ ##% # # %$ ##% # ! $ ! $% ! # $ $ TheMotorolaMPX4250seriesManifoldAbsolutePressure(MAP)sensorforturboboostenginecontrolisdesignedtosenseabsoluteairpressurewithintheintakemanifold.Thismeasurementcanbeusedtocomputetheamountoffuelrequiredforeachcylinder.TheMPX4250seriessensorintegrateson–chip,bipolaropampcircuitryandthinfilmresistornetworkstoprovideahighlevelanalogoutputsignalandtemperaturecompensation.Thesmallformfactorandreliabilityofon–chipintegrationmaketheMotorolaMAPsensoralogicalandeconomicalchoiceforautomotivesystemdesigners.Features•1.5%MaximumErrorOver0°to85°C•SpecificallyDesignedforIntakeManifoldAbsolutePressureSensinginEngineControlSystems•IdeallySuitedforDirectMicroprocessorInterfacing•PatentedSiliconShearStressStrainGauge•TemperatureCompensatedOver–40°to+125°C•OffersReductioninWeightandVolumeComparedtoExistingHybridModules•DurableEpoxyUnibodyElement•IdealforNon–AutomotiveApplicationsApplicationExamples•ManifoldSensingforAutomotiveSystemsPINS4,5AND6ARENOCONNECTSFigure1.FullyIntegratedPressureSensorSchematicVS3X–ducerSENSINGELEMENT1Vout2GNDTHINFILMTEMPERATURECOMPENSATIONANDGAINSTAGE#1GAINSTAGE#2ANDGROUNDREFERENCESHIFTCIRCUITRYSenseonandX–duceraretrademarksofMotorola,Inc.OrderthisdocumentbyMPX4250/D SEMICONDUCTORTECHNICALDATAMotorola,Inc.1997 INTEGRATEDPRESSURESENSOR20to250kPa(2.9to36.3psi)0.2to4.9VOUTPUTPINNUMBERNOTE:Pins4,5,and6areinternaldeviceconnections.Donotconnecttoexternalcircuitryorground.Pin1isnotedbythenotchintheLead.BASICCHIPCARRIERELEMENTCASE867–08,STYLE1PORTOPTIONCASE867B–04,STYLE1123VoutGndVS456N/CN/CN/CREV2 2MotorolaSensorDeviceDataMAXIMUMRATINGS(1)ParametricsSymbolValueUnitOverpressure(2)(P1P2)Pmax400kPaBurstPressure(2)(P1P2)Pburst1000kPaStorageTemperatureTstg–40to+125°COperatingTemperatureTA–40to+125°C1.TC=25°Cunlessotherwisenoted.2.Exposurebeyondthespecifiedlimitsmaycausepermanentdamageordegradationtothedevice.OPERATINGCHARACTERISTICS(VS=5.1Vdc,TA=25°Cunlessotherwisenoted,P1P2)CharacteristicSymbolMinTypMaxUnitPressureRange(1)POP20—250kPaSupplyVoltage(2)VS4.855.15.35VdcSupplyCurrentIo—7.010mAdcMinimumPressureOffset(3)(0to85°C)@VS=5.1VoltsVFSS4.6224.6924.762VdcFullScaleOutput(4)(0to85°C)@VS=5.1VoltsVFSS4.6224.6924.762VdcFullScaleSpan(5)(0to85°C)@VS=5.1VoltsVFSS4.6224.6924.762VdcAccuracy(6)(0to85°C)———±1.5%VFSSSensitivityΔV/ΔP—20—mV/kPaResponseTime(7)tR—1.0—msOutputSourceCurrentatFullScaleOutputlo+—0.1—mAdcWarm–UpTime(8)——20—msOffsetStability(9)——±0.5—%VFSSDecouplingcircuitshowninFigure3requiredtomeetelectricalspecifications.MECHANICALCHARACTERISTICSCharacteristicsSymbolMinTypMaxUnitWeight,BasicElement(Case867)——4.0—GramsCommonModeLinePressure(10)———690kPaNOTES:1.1.0kPa(kiloPascal)equals0.145psi.2.Deviceisratiometricwithinthisspecifiedexcitationrange.3.Offset(Voff)isdefinedastheoutputvoltageattheminimumratedpressure.4.FullScaleOutput(VFSO)isdefinedastheoutputvoltageatthemaximumorfullratedpressure.5.FullScaleSpan(VFSS)isdefinedasthealgebraicdifferencebetweentheoutputvoltageatfullratedpressureandtheoutputvoltageattheminimumratedpressure.6.Accuracy(errorbudget)consistsofthefollowing:•Linearity:Outputdeviationfromastraightlinerelationshipwithpressureoverthespecifiedpressurerange.•TemperatureHysteresis:Outputdeviationatanytemperaturewithintheoperatingtemperaturerange,afterthetemperatureiscycledtoandfromtheminimumormaximumoperatingtemperaturepoints,withzerodifferentialpressureapplied.•PressureHysteresis:Outputdeviationatanypressurewithinthespecifiedrange,whenthispressureiscycledtoandfromtheminimumormaximumratedpressure,at25°C.•TcSpan:Outputdeviationoverthetemperaturerangeof0°to85°C,relativeto25°C.•TcOffset:Outputdeviationwithminimumratedpressureapplied,overthetemperaturerangeof0°to85°C,relativeto25°C.•VariationfromNominal:Thevariationfromnominalvalues,forOffsetorFullScaleSpan,asapercentofVFSS,at25°C.7.ResponseTimeisdefinedasthetimefortheincrementalchangeintheoutputtogofrom10%to90%ofitsfinalvaluewhensubjectedtoaspecifiedstepchangeinpressure.8.Warm–upisdefinedasthetimerequiredfortheproducttomeetthespecifiedoutputvoltageafterthePressurehasbeenstabilized.9.Offsetstabilityistheproduct’soutputdeviationwhensubjectedto1000hoursofPulsedPressure,TemperatureCyclingwithBiasTest.10.Commonmodepressuresbeyondwhatisspecifiedmayresultinleakageatthecase–to–leadinterface. 3MotorolaSensorDeviceDataFigure2.Cross–SectionalDiagram(NottoScale)μPROCESSORA/D51k50pFMPX4250AOUPUT(PIN1)Figure3.TypicalDecouplingFilterforSensortoMicroprocessorInterfaceÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉSILICONEDIECOATWIREBONDSTAINLESSSTEELMETALCOVERRTVDIEBONDDIEP1P2EPOXYCASELEADFRAMESEALEDVACUUMREFERENCEFigure2illustratestheabsolutesensingchipinthebasicchipcarrier(Case867).Afluorosiliconegelisolatesthediesurfaceandwirebondsfromtheenvironment,whileallowingthepressuresignaltobetransmittedtothesensordia-phragm.TheMPX4250Aseriespressuresensoroperatingcharacteristics,andinternalreliabilityan