push - pull half - bridge magnetoresistive switch , comprising two magnetic sensor chips , each magnetic sensor chip having a magnetic induction resistor and a magnetic induction resistor electrical connection pad . the two magnetic sensor chips are electrically interconnected and have opposite and parallel directions of induction , thus forming the push - pull half - bridge circuit . the magnetic induction resistor comprises one or a plurality of magnetoresistive elements connected in series . the magnetic induction resistor pads are located at adjacent edges of the magnetic sensor chips , and each pad may accommodate the welding of at least two bonding wires . the magnetoresistive switch may improve the sensitivity of a sensor , and decrease output voltage deviation and output voltage temperature drift , which is beneficial for decreasing the volume and increasing the performance of the switch sensor .