MH249:HighsensetivityCMOSswitchOrderingNumberMH249SignalOutputnonTemperature-40℃-85℃PackageUA/SOVoltagerange3.0V-5.0VOutputcurrent1mASensitivity45GStatusNowMH249Hall-effectsensorisatemperaturestable,stress-resistantswitch.Superiorhigh-temperatureperformanceismadepossiblethroughadynamicoffsetcancellationthatutilizeschopper-stabilization.Thismethodreducestheoffsetvoltagenormallycausedbydeviceovermolding,temperaturedependencies,andthermalstress.TheMH249includesthefollowingonasinglesiliconchip:voltageregulator,Hallvoltagegenerator,small-signalamplifier,chopperstabilization,Schmitttrigger,andashortcircuitprotectedopen-drainoutput.AdvancedCMOSwaferfabricationprocessingisusedtotakeadvantageoflow-voltagerequirements,componentmatching,verylowinput-offseterrors,andsmallcomponentgeometries.Thisdevicerequiresthepresenceofomni-polarmagneticfieldsforoperation.TheMH249isratedforoperationbetweentheambienttemperatures 40 Cand+85 CfortheEtemperaturerange.Thepackagestyleavailableprovidemagneticallyoptimizedsolutionsformostapplications.PackageSOisanSOT-23,aminiaturelow-profilesurface-mountpackage.Thepackagetypeisinalead(Pb)-freeversionwasverifiedbythirdpartyLab.FeaturesandBenefitsCMOSHallICTechnologySolid-StateReliabilitymuchbetterthanreedswitchOmnipolaroutputswitcheswithabsolutevalueofNorthorSouthpolefrommagnetOperationdownto2.5VHighSensitivityforreedswitchreplacementSmallSizeinSot23packageApplicationsSolidstateswitchLidclosesensorforpowersupplydevicesMagnetproximitysensorforreedswitchreplacementinhighdutycycleapplications.SafetyKeyRevolutioncounter