标签: handheld

GPSdesignissuesinhandhelddevices-whitepaperGPSDesignIssuesinhandhelddevices-WhitepaperAbstractThisdocumentdiscussescommonGPSimplementationproblemsinportabledevices.TypicallytheperformanceofGPSishighlyreducedinPND,PDA,FeaturePhoneandSmartPhonedevicesduetolackofunderstandingofbasicHW/RFdesignandEMIissues.Therootcausearisestypicallyfrombothpoorantennadesign/selectionandinternalEMIinterference.GPSsignalpowerlevelinopenskyenvironmentisnominally……

用模拟开关配置获取零点和量程输出代码的正确安装。Maxim>AppNotes>AnalogSwitchesandMultiplexersKeywords:A/Dconverters,ADCs,A/Dconvertercalibration,offsetflipping,handhelddevicesJan13,2011APPLICATIONNOTE4539PreciseCalibrationofDual-SlopeADCsAbstract:ThiscircuitcalibratesADCson-the-fly,usinganalogswitchestoconfigurethesetupproperlyforobtainingthezeroandspanoutputcodes.AsimilarversionofthisarticleappearedintheDecember31,2007issueofEETimesmagazine.Handhelddevicesformeasuringtoxicgas,bloodglucose,etc.areincreasinglypopular,andtheirlowcosthasmadethemthrowawaydevices,tobediscardedwhenthebatteryorthesensorexpires.Typicaldevicesincludealithium(Li)primarycell,asensor,anA/Dconverter(ADC),conditioningci……

IntersilhandheldsolutionPresentation2008CorporatePresentationQ12008Intersil’sHistoryRadiationInc.FoundedGESolidStateRCASolidStateBeginsoperationsMergeswithRCASolidStateIntersilIntersilBecomesindependentcompanySellsdiscretepowerbusinesstoFairchildIntersilAcquiresXicorHarrisMergeswithRadiationInc.IntersilAcquiresPlanetATE19501954195619671980198619881999200020012002200320042007GESolidStateAcquiresIntersilIntersilIntersilHarrisAcquiresGESolidState(GE,RCAandIntersil)CompleteslargestIPOforaUSsemiconductorcompanyBecomesapure-playanalogcompanyIntersilFoundedinCupertino,CAIntersilSellswirelessnetworkproductsgroupGESolidStateBeginsoperationsIntersilAcquiresElantecOurcompany’srootswereplantedwithRadiationIncorpora……