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:
Feb. 09, 2016
Filed:
Oct. 17, 2012
Applicant:
Renesas Electronics Corporation, Kanagawa, JP;
Inventors:
Kazuaki Deguchi, Kawasaki, JP;
Masao Ito, Kawasaki, JP;
Assignee:
RENESAS ELECTRONICS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/38 (2006.01); H03M 1/46 (2006.01); H03M 1/12 (2006.01); H03K 5/159 (2006.01); H03M 1/00 (2006.01); H03M 1/06 (2006.01);
U.S. Cl.
CPC ...
H03M 1/462 (2013.01); H03K 5/159 (2013.01); H03M 1/002 (2013.01); H03M 1/0624 (2013.01); H03M 1/125 (2013.01); H03M 1/38 (2013.01);
Abstract
A successive approximation type AD converter includes: a comparator comparing an analog input signal and a DA-converted comparison code; and a control circuit. When an output of the comparator settles before a limit time period has passed since the comparator started a comparison operation, the control circuit updates the comparison code on the basis of the settled output of the comparator. When the limit time period has passed before the output of the comparator settles, the control circuit updates the comparison code not on the basis of the present output of the comparator.