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:
May. 21, 2019
Filed:
Dec. 11, 2017
Olympus Corporation, Hachioji-shi, Tokyo, JP;
OLYMPUS CORPORATION, Tokyo, JP;
Abstract
A semiconductor device is provided that includes an amplification circuit, a downstream circuit, and a clipping circuit. The amplification circuit includes a sampling capacitor, a feedback capacitor, and an operational amplifier circuit. The sampling capacitor holds air input signal on which sampling is performed, as a signal whose reference is a first reference voltage. The signal that is held in the sampling capacitor is transferred to the feedback capacitor. The operational amplifier circuit amplifies the signal that is held in the sampling capacitor, according to a ratio between values of the sampling capacitor and the feedback capacitor, and outputs the amplified signal, as a signal whose reference is a second reference voltage. The clipping circuit limits a voltage of an output signal of the operational amplifier circuit to a predetermined voltage or below.