PUSH-PULL FLIP-CHIP HALF-BRIDGE MAGNETORESISTIVE SWITCH

摘要

A push-pull half-bridge magnetoresistive switch is disclosed, comprising two magnetic sensor chips (101, 102), wherein each magnetic sensor chip has a single magnetoresistor (108) and bond pads for electrically connecting the magnetoresistor. The two magnetic sensor chips are electrically interconnected and arranged such that their sensing directions are anti-parallel, thus forming the push-pull half-bridge circuit. The magnetoresistor comprises one or a plurality of magnetoresistive elements (40) connected in series. The magnetoresistor bond pads are located at adjacent edges of the magnetic sensor chips, and each bond pad may accommodate at least two wire bonds. The magnetoresistive switch has improved sensitivity, and decreased output voltage variation dependence on temperature, these benefits make it possible to decrease the volume while improving the performance of the switch sensor.