TheAllegro A1101-A1104andA1106Hall-effectswitchesarenextgenerationreplacementsforthepopularAllegro312xand314xlinesofunipolarswitches.TheA110xfamily,producedwithBiCMOStechnology,consistsofdevicesthatfeaturefastpower-ontimeandlow-noiseoperation.Deviceprogrammingisperformedafterpackaging,toensureincreasedswitchpointaccuracybyeliminatingoffsetsthatcanbeinducedbypackagestress.UniqueHallelementgeometriesandlowoffsetamplifiershelptominimizenoiseandtoreducetheresidualoffsetvoltagenormallycausedbydeviceovermolding,temperatureexcursions,andthermalstress.TheA1101-A1104andA1106Hall-effectswitchesincludethefollowingonasinglesiliconchip:voltageregulator,Hall-voltagegenerator,small-signalamplifier,Schmitttrigger,andNMOSoutputtransistor.Theintegratedvoltageregulatorpermitsoperationfrom3.8to24V.Theextensiveon-boardprotectioncircuitrymakespossiblea 30Vabsolutemaximumvoltageratingforsuperiorprotectioninautomotiveandindustrialmotorcommutationapplications,withoutadding