Patent ID: 11971462
Assignee: EVERSPIN TECHNOLOGIES, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. A magnetic field sensor, comprising:
a plurality of magnetoresistance sense elements coupled together as a first circuit to sense a magnetic field, wherein each of the plurality of magnetoresistance sense elements includes a first ferromagnetic layer and a second ferromagnetic layer separated by an insulating barrier layer, wherein the plurality of magnetoresistance sense elements includes at least a first magnetoresistance sense element and a second magnetoresistance sense element located in a plane; and
a plurality of flux guides, wherein a first flux guide of the plurality of flux guides is located between the first and second magnetoresistance sense elements and above or below the first magnetoresistance sense element,
wherein the first magnetoresistance sense element and a third magnetoresistance sense element of the plurality of magnetoresistance sense elements are coupled via a first common ferromagnetic layer that extends between the first and third magnetoresistance sense elements,
wherein the second magnetoresistance sense element and a fourth magnetoresistance sense element of the plurality of magnetoresistance sense elements are coupled via a second common ferromagnetic layer that extends between the second and fourth magnetoresistance sense elements,
wherein the first common ferromagnetic layer and the second common ferromagnetic layer are spaced apart, and
wherein, when a magnetic field is sensed by the plurality of magnetoresistance sense elements, a sense current flows through the first ferromagnetic layer, the insulating barrier layer, and the second ferromagnetic layer of a magnetoresistance sense element.