This　paper　presents　an　integrated　Hall　switch　sensor　based　on　SMIC　0.18　μm　CMOS　technology.　The　system　includes　a　front-end　Hall　element　and　a　back-end　signal　processing　circuit.　By　optimizing　the　structure　of　the　Hall　element　and　using　the　orthogonal　coupling　and　spinning　current　technology,　the　offset　voltage　can　be　suppressed　effectively.　The　simulation　results　showed　that　the　Hall　switch　can　eliminate　offset　voltage　greater　than　1　mV　at　3.3　V　supply　voltage.　Two　modes　of　the　Hall　switch　circuit,　the　awake　mode　and　the　sleep　mode,　were　realized　by　using　clock　logic　signals　without　compromising　the　performance　of　the　Hall　switch,　thereby　reducing　power　consumption.　The　test　results　showed　that　the　operate　point　and　the　release　point　of　the　switch　were　within　the　range　of　3-7　mT　at　3.3　V　supply　voltage.　Meanwhile,　the　current　consumption　is　7.89　μA.　©　2017　Rongshan　Wei　et　al.