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. 25, 2020
Filed:
Jul. 20, 2017
Applicant:
Allegro Microsystems, Llc, Manchester, NH (US);
Inventors:
Michael C. Doogue, Bedford, NH (US);
P. Karl Scheller, Manchester, NH (US);
Assignee:
Allegro MicroSystems, LLC, Manchester, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 5/14 (2006.01); G01P 3/487 (2006.01); G01R 33/07 (2006.01); G01D 5/165 (2006.01); G01R 33/09 (2006.01); G01D 3/08 (2006.01); G01P 13/04 (2006.01);
U.S. Cl.
CPC ...
G01D 5/145 (2013.01); G01D 3/08 (2013.01); G01D 5/165 (2013.01); G01P 3/487 (2013.01); G01P 13/045 (2013.01); G01R 33/072 (2013.01); G01R 33/091 (2013.01);
Abstract
In one aspect, an integrated circuit (IC) includes a magnetic field sensor to detect speed and direction of angular rotation of a rotating magnetic structure. The magnetic field sensor includes at least two magnetic field sensing elements configured to sense changes in a magnetic field caused by rotation of the magnetic structure. The IC also includes an output port configured to provide an output signal of the magnetic field sensor. The frequency of the output signal indicates the speed and the direction or indicates a fault.