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:
Feb. 02, 2021
Filed:
Oct. 15, 2018
Applicant:
Allegro Microsystems, Llc, Manchester, NH (US);
Inventors:
Alexander Latham, Harvard, MA (US);
Craig S. Petrie, Merrimack, NH (US);
Assignee:
Allegro MicroSystems, LLC, Manchester, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 5/14 (2006.01); G01R 33/07 (2006.01); G01R 31/00 (2006.01); G01R 35/00 (2006.01);
U.S. Cl.
CPC ...
G01R 33/077 (2013.01); G01D 5/147 (2013.01); G01R 35/005 (2013.01);
Abstract
A magnetic field sensor for sensing external magnetic fields on multiple axes comprises a coil structure and a gain equalization circuit. The coil structure generates reference fields on magnetic field sensing elements in each axis. The gain equalization circuit measures and compares reference fields to generate gain-equalized output signals responsive to the external magnetic fields.