The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 2026
Filed:
Jan. 23, 2024
Allegro Microsystems, Llc, Manchester, NH (US);
Rémy Lassalle-Balier, Bures sur Yvette, FR;
Alexander Latham, Harvard, MA (US);
Allegro MicroSystems, LLC, Manchester, NH (US);
Abstract
A magnetic field sensor includes magnetoresistance elements supported by a surface of the die defining a plane, and a concentrator layer over the surface of the die and having an aperture. A first magnetoresistance element is adjacent to a first edge of the aperture and has a first reference direction parallel to the surface of the die and substantially perpendicular to the first aperture edge and a second magnetoresistance element is adjacent to a second edge of the aperture and has the first reference direction. The concentrator layer redirects the applied magnetic field to present a differential field parallel to the plane of the die to the magnetoresistance elements in response to applied field perpendicular to the plane of the die and to present a reduced magnitude and common mode field to the magnetoresistance elements in response to the applied field parallel to the plane of the die.