CHIP-TYPE MAGNETIC SENSOR

摘要

A chip-type magnetic sensor comprises a chip (12) and a circuit board (13). The chip (12) is used for generating a differential signal based on a sensed magnetic signal of an anti-counterfeiting identifier in an object under detection; and the chip (12) is fixed to the circuit board (13), and the output end of the chip (12) is electrically connected to the wiring arranged on the circuit board (13). The chip-type magnetic sensor also comprises an anti-interference device (14) on which a magnetic vacuum area is arranged. The chip (12) is arranged in the magnetic vacuum area, and the sensing surface of the chip (12) is directed toward the object under detection. The chip-type magnetic sensor has a high signal-to-noise ratio and sensitivity and a small volume, and is easy to integrate.