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:
Dec. 13, 2022
Filed:
Oct. 15, 2021
Applicant:
Allegro Microsystems, Llc, Manchester, NH (US);
Inventors:
Rémy Lassalle-Balier, Bures sur Yvette, FR;
Pierre Belliot, Bourg-la-reine, FR;
Christophe Hoareau, Jouy-en-Josas, FR;
Jean-Michel Daga, Bourg-la-Reine, FR;
Assignee:
Allegro MicroSystems, LLC, Manchester, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 33/02 (2006.01); G01R 33/09 (2006.01); G01R 33/00 (2006.01); G01B 7/30 (2006.01);
U.S. Cl.
CPC ...
G01R 33/098 (2013.01); G01B 7/30 (2013.01); G01R 33/0082 (2013.01); G01R 33/093 (2013.01);
Abstract
In one aspect, a magnetic field sensor includes a plurality of tunneling magnetoresistance (TMR) elements that includes a first TMR element, a second TMR element, a third TMR element and a fourth TMR element. The first and second TMR elements are connected to a voltage source and the third and fourth TMR elements are connected to ground. Each TMR element has a pillar count of more than one pillar and the pillar count is selected to reduce the angle error below 1.0°.