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. 22, 2016
Filed:
Apr. 21, 2015
Renesas Electronics Corporation, Kanagawa, JP;
Yuichi Okuda, Kanagawa, JP;
Hideo Nakane, Kanagawa, JP;
Takaya Yamamoto, Kanagawa, JP;
Keisuke Kimura, Kanagawa, JP;
Takashi Oshima, Tokyo, JP;
Tatsuji Matsuura, Kanagawa, JP;
RENESAS ELECTRONICS CORPORATION, Tokyo, JP;
Abstract
A differential signal is amplified by passive amplification which does not a reference of a common-mode voltage. At this time, the voltage of the differential signal is passive-amplified twice before carrying out a successive approximation type analog-digital conversion operation. The passive amplification is attained by providing a plurality of capacitances which carry out a sampling operation, and switching these connection relation by using switches. Without being accompanied by the increase of the consumed power and the chip size, an influence by the noise of s comparator is reduced to a half so that the effective resolution can be increased for one bit.