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. 29, 2022
Filed:
Mar. 17, 2021
Ablic Inc., Tokyo, JP;
Tomoki Hikichi, Tokyo, JP;
Kentaro Fukai, Tokyo, JP;
ABLIC INC., Tokyo, JP;
Abstract
A semiconductor device formed on a semiconductor substrate of a P type includes: a vertical resistor circuit including a resistor of an N type, the resistor forming a current path in a direction perpendicular to a surface of the semiconductor substrate; a Hall element provided on the semiconductor substrate, the Hall element being configured to supply a voltage proportional to a magnetic flux density in the direction perpendicular to the surface of the semiconductor substrate; an amplifier configured to amplify the voltage supplied from the Hall element, and supply the amplified voltage; a current/voltage conversion circuit configured to supply, as a comparison reference voltage, a voltage containing a product of a reference current IREF flowing through the vertical resistor circuit and a resistance value RREF of the vertical resistor circuit; and a comparator configured to receive the voltage supplied from the amplifier and the comparison reference voltage.