Patent ID: 9702944
Date: 2017-07-11
CPC Classifications: G01R,G11C

Claim:
1. An apparatus, comprising: a plurality of circuits, each of the plurality of circuits including an array of magnetic tunnel junctions partitioned into a plurality of subarrays, wherein: a module configured to determine the external magnetic field based on a parameter of each of the plurality of circuits, wherein the parameter of each of the plurality of circuits varies based on a combined impedance of the multiple magnetic tunnel junctions, the module being implemented in at least one of a memory or a processing device; wherein: the magnetic tunnel junctions in one or more of the plurality of rows are disposed between a first conductive layer and a second conductive layer including a strap; a first magnetic tunnel junction, a second magnetic tunnel junction, and a third magnetic tunnel junction disposed between the first magnetic tunnel junction and the second magnetic tunnel junction are included in the magnetic tunnel junctions in the one or more of the plurality of rows; the first magnetic tunnel junction and the third magnetic tunnel junction are connected to a portion of the first conductive layer; and the second magnetic tunnel junction and the third magnetic tunnel junction are connected to the strap.