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. 06, 2016
Filed:
Jan. 29, 2013
Asahi Kasei Microdevices Corporation, Tokyo, JP;
Asahi Kasei Microdevices Corporation, Tokyo, JP;
Abstract
A Hall electromotive force signal detection circuit combines offset cancellation means by a spinning current method of a Hall element with a continuous-time signal processing circuit. A Hall element includes first to fourth terminals, and generates a Hall electromotive force signal voltage Vhall. Another Hall element generates another Hall electromotive force signal voltage Vhall. A first switching circuit selects a terminal position for applying a drive current from the four terminals of the Hall element. A second switching circuit selects a terminal position for applying a drive current from the four terminals of the another Hall element, which is different from the terminal position selected by the first switching circuit. A chopper clock generation circuit supplies a chopper clock signal φhaving two different phases to the switching circuit, and also supplies the chopper clock signal φto the first and second switching circuits.