MAX9921雙通道、2線霍爾傳感器接口，具有診斷功能TheMAX9921providesasinglechipsolutiontointerfacetwo2-wireHall-effectsensorstoalow-voltagemicroprocessor( P).ThisdevicesuppliesandmonitorsthecurrentdrawnbytwoHall-effectsensors,filtersthesensedcurrentlevel,andoutputsthecorrespondinglogiclevel.TheMAX9921includesinputdiagnosticsandfaultprotection.Thesefeaturesallowthedevicetodeterminefaultconditionssuchasopeninputs,inputsshortedtothebattery,andinputsshortedtoground.IftheMAX9921detectsanyoftheseconditionsateitherIN1orIN2,thedeviceshutsoffthecurrenttothecorrespondinginput.TheMAX9921protectstheHallsensorsfromsupplytransientsupto60VattheBATsupply.Normaloperatingsupplyvoltagerangesfrom6Vto18V.Ifthebatteryvoltageisoutofrange,theMAX9921shutsoffthecurrenttotheHallsensors.TheMAX9921providesan80 sblankingtimefollowingHallsensorpower-uporrestart.Theopen-drainlogicoutputsarecompatiblewithlogiclevelsupto5.5V.TheMAX9921isavailableinasmall10-pin MAX packageandisspecifiedoverthe-40 Cto+125 Cautomotivetemperaturerange.應(yīng)用：門(mén)控模塊汽車(chē)天窗車(chē)窗升降控制轉(zhuǎn)動(dòng)板座位移動(dòng)控制汽車(chē)安全帶扣鎖車(chē)窗升降控制