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. 06, 2012
Filed:
Feb. 16, 2007
Yoichi Nagata, Saitama, JP;
Yoichi Nagata, Saitama, JP;
Citizen Holdings Co., Ltd., Tokyo, JP;
Abstract
A physical quantity sensor includes a sensor element that converts an externally applied physical quantity to an electrical signal; a detection circuit that amplifies and detects the output signal of this sensor element; and an adjustment circuit that adjusts the output signal from the detection circuit to a predetermined signal by applying the power supply wherein the adjustment circuit comprises an amplifier circuit that amplifies the output signal from the detection circuit and a reference amplifier circuit that has a gain that is made to correspond to the gain of the amplifier circuit. This configuration allows the gain of the amplifier circuit in the adjustment circuit to be varied according to the power supply voltage and, as a results, provides a physical quantity sensor having reliable sensor detection sensitivity and high-accuracy ratiometric characteristics.