AK8963规格书

[AK8963]MS1356-E-02-1-2013/10AK89633-axisElectronicCompass1.FeaturesA3-axiselectroniccompassICwithhighsensitiveHallsensortechnology.Bestadaptedtopedestriancitynavigationuseforcellphoneandotherportableappliance.Functions:•3-axismagnetometerdevicesuitableforcompassapplication•Built-inAtoDConverterformagnetometerdataout•14-/16-bitselectabledataoutforeach3axismagneticcomponents-Sensitivity:0.6µT/LSBtyp.(14-bit)0.15µT/LSBtyp.(16-bit)•Serialinterface-I2Cbusinterface.StandardmodeandFastmodecompliantwithPhilipsI2CspecificationVer.2.1-4-wireSPI•Operationmodes:Power-down,Singlemeasurement,Continuousmeasurement,Externaltriggermeasurement,SelftestandFuseROMaccess.•DRDYfunctionformeasurementdataready•Magneticsensoroverflowmonitorfunction•Built-inoscillatorforinternalclocksource•PoweronResetcircuit•Selftestfunctionwithbuilt-ininternalmagneticsourceOperatingtemperatures:•-30°Cto+85°COperatingsupplyvoltage:•Analogpowersupply+2.4Vto+3.6V•DigitalInterfacesupply+1.65Vtoanalogpowersupplyvoltage.Currentconsumption:•Power-down:3µAtyp.•Measurement:-Averagepowerconsumptionat8Hzrepetitionrate:280µAtyp.Package:AK8963C14-pinWL-CSP(BGA):1.6mm×1.6mm×0.5mm(typ.)AK8963N16-pinQFNpackage:3.0mm×3.0mm×0.75mm(typ.)[AK8963]MS1356-E-02-2-2013/102.OverviewAK8963is3-axiselectroniccompassICwithhighsensitiveHallsensortechnology.SmallpackageofAK8963incorporatesmagneticsensorsfordetectingterrestrialmagnetismintheX-axis,Y-axis,andZ-axis,asensordrivingcircuit,signalamplifierchain,andanarithmeticcircuitforprocessingthesignalfromeachsensor.Selftestfunctionisalsoincorporated.Fromitscompactfootprintandthinpackagefeature,itissuitableformapheadinguppurposeinGPS-equippedcellphonetorealizepedestriannavigationfunction.AK8963hasthefollowingfeatures:(1)SiliconmonolithicHall-effectmagneticsensorwithmagneticconcentratorrealizes3-axismagnetometeronasiliconchip.Analogcircuit,digitallogic,powerblockandinterfaceblockarealsointegratedonachip.(2)Widedynamicmeasurementrangeandhighresolutionwithlowercurrentconsumption.Outputdataresolution:14-bit(0.6µT/LSB)16-bit(0.15µT/LSB)Measurementrange:±4900µTAveragecurrentat8Hzrepetitionrate:280µAtyp.(3)Digitalserialinterface-I2CbusinterfacetocontrolAK8963functionsandtoreadoutthemeasureddatabyexternalCPU.AdedicatedpowersupplyforI2Cbusinterfacecanworkinlow-voltageapplyaslowas1.65V.-4-wireSPIisalsosupported.AdedicatedpowersupplyforSPIcanworkinlow-voltageapplyaslowas1.65V.(4)DRDYpinandregisterinformtosystemthatmeasurementisendandsetofdatainregistersarereadytoberead.(5)Deviceisworkedbyon-chiposcillatorsonoexternalclocksourceisnecessary.(6)Selftestfunctionwithinternalmagneticsourcetoconfirmmagneticsensoroperationonendproducts.[AK8963]MS1356-E-02-3-2013/103.TableofContents1.Features......................................................................................................................................12.Overview.....................................................................................................................................23.TableofContents........................................................................................................................34.CircuitConfiguration....................................................................................................................54.1.BlockDiagram......................................................................................................................54.2.BlockFunction.....................................................................................................................54.3.PinFunction.........................................................................................................................65.OverallCharacteristics................................................................................................................75.1.AbsoluteMaximumRatings.................................................................................................75.2.RecommendedOperatingConditions.................................................................................75.3.ElectricalCharacteristics.....................................................................................................75.3.1.DCCharacteristics........................................................................................................75.3.2.ACCharacteristics........................................................................................................85.3.3.AnalogCircuitCharacteristics......................................................................................95.3.4.4-wireSPI...................................................................................................................105.3.5.I2CBusInterface..........................................................................................................116.FunctionalExplanation..............................................................................................................126.1.PowerStates............................................