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. 16, 2017
Filed:
May. 20, 2016
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Takuji Miki, Osaka, JP;
Kazuo Matsukawa, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/38 (2006.01); H03M 1/46 (2006.01); H03M 1/06 (2006.01);
U.S. Cl.
CPC ...
H03M 1/468 (2013.01); H03M 1/0626 (2013.01); H03M 1/0665 (2013.01);
Abstract
An AD converter converts an analogue input voltage into a digital value including a most significant bit to a least significant bit. The AD converter includes: a common node; a capacitive DAC; a comparator; a successive approximation controller; and an integrator. The integrator includes first to Xintegrating circuits connected in a cascade arrangement, where X is an integer greater than or equal to two, and at least one feedforward path that each samples a residual voltage and outputs the sampled residual voltage to one of the second to Xintegrating circuits.