Single-chip high-magnetic-field X-axis linear magnetoresistive sensor with calibration and initialization coil

A single-chip high-magnetic-field X-axis linear magnetoresistive sensor with a calibration and an initialization coil, comprising a high magnetic field single-chip referenced bridge X-axis magnetoresistive sensor, a calibration coil, and an initialization coil;

• wherein the high magnetic field single-chip referenced bridge X-axis magnetoresistive sensor comprises a reference magnetoresistive sensor unit string and a sensing magnetoresistive sensor unit string staggered above a substrate, and elongated soft ferromagnetic flux guides, the soft ferromagnetic flux guides each comprise a shielding device and an attenuator, the reference magnetoresistive sensor unit string and the sensing magnetoresistive sensor unit string are respectively located at positions of Y-axis center lines on surfaces of the shielding devices and the attenuators respectively, the reference magnetoresistive sensor unit string and the sensing magnetoresistive sensor unit string are electrically connected to form a referenced bridge structure, a sensing direction is an X-axis direction, and the reference magnetoresistive sensor unit string and the sensing magnetoresistive sensor unit string both comprise multiple magnetoresistive units;
• wherein the calibration coils are planar coils and comprise reference unit straight wires and sensing unit straight wires which are parallel and connected in series and respectively correspond to the reference magnetoresistive sensor unit string and the sensing magnetoresistive sensor unit string, and the reference unit straight wires and the sensing unit straight wires generate a reference unit calibration magnetic field and a sensing unit calibration magnetic field respectively along the sensing directions of the magnetoresistive sensor units at the positions of the reference magnetoresistive sensor unit string and the sensing magnetoresistive sensor unit string;
• and
• wherein the initialization coils comprise multiple initialization straight wires perpendicular to the sensing magnetoresistive sensor unit string and the reference magnetoresistive sensor unit string, and generate a same initialization magnetic field along a direction perpendicular to the sensing directions at the locations of all the magnetoresistive sensor unit strings.