FBM320-中文版-1_8

FBM320seriesDigitalbarometerFeaturesSupplyvoltage:1.7to5.5V(V)1.2to5.5V(VDDDDIO)300to1100hPapressurerange8cmaltituderesolution(RMS)2.2msfastestconversiontimeStandbycurrent0.1μAICandSPIinterfacesCalibratedandtemperaturecompensatedApplicationExamples室内和室外导航天气预报设备便携式设备的高度计和气压计自行车计算机DescriptionsFBM320是新一代高分辨率数字气压计。FBM320是一个数字压力传感器，由MEMS压阻式压力传感器和信号组成调节ASIC。ASIC包括用于校准数据的24bitssigma-deltaADC，OTP存储器，和串行接口电路。FBM320可以提供IC和SPI接口进行通信与微控制器。压力校准和温度补偿是FBM320的关键特性。数据存储在OTP存储器中可用于校准FBM320。校准程序应该是由外部微处理器实现。FBM320是低功耗和电源电压设计的并适用于便携式设备或电池供电。订购信息PartNo.FBM320-A11KDRPressuretypeAbsolutePressurerange300-1100hPaDigitalinterfaceSPI/ICPackageLGANoteTape&ReelRev.1.82015/6/291222Indexofcontents1FunctionalBlockandPinDescriptions........................................................................................32ElectricalCharacteristic...............................................................................................................43AbsoluteMaximumConditions...................................................................................................44ApplicationInformation...............................................................................................................55Controlregisters...........................................................................................................................66SPIInterface.................................................................................................................................77ICInterface.................................................................................................................................98PackageInformation..................................................................................................................118.1Outlinedimensions............................................................................................................118.2Recommendedfootprint.....................................................................................................118.3TapeandReelspecification...............................................................................................129Documenthistoryandmodification...........................................................................................13Rev.1.82015/6/29221FunctionalBlockandPinDescriptionsVDDVDDIOPressureSensorVEXTVINPVINNLDOMUXPGABufferADCControlLogicSerialInterfacefilterCSBSCLSDO/ADDRSDA/SDI/SDIOTempSensorOSC&TimingPOROTPGNDFig.1FunctionalBlockDiagramofFBM320PinNo.12PinNameGNDCSBGroundChipSelectDescription2345678SDA/SDI/SDIOSCLSDO/ADDRVDDIOGNDVDDSerialdatainput/outputinICmode(SDA)Serialdatainputin4-wireSPImode(SDI)Serialdatainput/outputin3-wireSPImode(SDIO)SerialclockAddressselectinICmodePowersupplyforI/OcircuitsGroundPowersupplyforcorecircuitsRev.1.82015/6/2932ElectricalCharacteristicSupplyVoltage233AbsoluteMaximumConditionsSupplyVoltageRev.1.82015/6/294ParameterSymbolConditionsMinTypMaxUnitsNotesPressureRange3001100hPambarOperatingTemperatureRange-4085oCVDD1.71.85.5VVDDIO1.21.85.5VSupplyCurrentPressuremeasurementUltralowpowerStandardHighresolutionUltrahighresolutionTemperaturemeasurementIDDVDD=2.5V1conversion/sec.3.04.77.713.91.93.56.48.916.02.2μAPeakCurrentDuringConversionPressuremeasurementTemperaturemeasurementIpeakVDD=2.5V1.510.95mAStandbyCurrentIsd0.1μAConversiontimePressuremeasurementUltralowpowerStandardHighresolutionUltrahighresolutionTemperaturemeasurement2.23.35.49.82.22.53.76.010.72.5msRelativePressureAccuracy700～950hPa±0.12hPaVDD=3.3V25～40℃±1.0mOffsettemperaturecoefficient900hPa25～40℃1.5Pa/KAbsolutePressureAccuracy300～1100hPa-20～0℃±1.7hPaVDD=3.3V300～1100hPa0～65℃±1.0hPaResolutioninultrahighresolutionmodePressureTemperature0.010.01hPa℃4NoiseinpressureUltralowpowerStandardHighresolutionUltrahighresolution1.971.461.160.98PaRMSnoiseAbsolutetemperatureaccuracyVDD=3.3V@25℃0～65℃-1.5-2±0.5±11.52℃SolderingdriftAftersolderreflow-22hPaLongtermstability12months-11hPa1.Allthedataweremeasuredwith2.5Vsupplyvoltageatatemperatureof25±3℃,unlessotherwisenoted.2.Maximumerrorofpressurereadingoverthepressurerangeafteroffsetadjustedatonepressurepoint.3.Maximumerrorofpressurereadingoverthepressurerange.4.Accordingto32bitintegercompensationformula.ParameterSymbolConditionsMinTypMaxUnitsNotesAVDD-0.36.5VVDDIO-0.36.5V4ApplicationInformation由于现有技术的发展，FBM320建立了一个新的数字气压计标准。A24位Σ-ΔADC和aMEMS压力传感器集成在LGA基板中。压力校准和温度补偿是关键功能的FBM320。FBM320是低功耗和电源电压设计和适合便携式设备或电池供电。存储在OTP存储器中的数据可用于校准FBM320。校准程序应该是由外部微处理器实现。通过IC或SPI接口，可以获得校准数据存储在OTP和压力和温度的原始数据。为了获得正确的压力和温度读数，计算过程必须在微处理器中实现。ApplicationCircuitexampleFigure.4.1ApplicationcircuitforICinterfaceFigure4.2ApplicationcircuitforSPIinterfaceRev.1.82015/6/295Digitaloutputvoltage-0.3VDDIO+0.3VStorageTemperatureRange-40125oCMaximumOverpressure10barESDRatingHBM2kV25控制寄存器Table5.1控制寄存器AddrDescriptionR/WBit7Bit6Bit5Bit4Bit3Bit2Bit1Bit0Default0xF80xF70xF60xF40xF10xE00xD00xBB-0xAA0x6B0x00DATA_LSBDATA_CSBDATA_MSBCONFIG_1Cal_coeffSoft_resetCal_coeffCal_coeffPartIDSPI_CtrlRRRRWRWRRRRWOSR1:0SDO_acLSB_firtivestDataout7