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. 24, 2011
Filed:
Aug. 21, 2007
Applicant:
Yusuke Aiba, Tokyo, JP;
Inventor:
Yusuke Aiba, Tokyo, JP;
Assignee:
Asahi Kasei EMD Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03M 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a continuous-time delta-sigma modulator which is configured with an SC (SCR) feedback DA () for improving tolerance to jitter for a clock signal and operates stably by maintaining a certain feedback amount without being influenced by a change in a production process thereof or an operating temperature condition thereof. By adjusting a reference voltage Vref that determines an output voltage of the SC feedback DA (), it is possible to feed back a certain amount of charge from the SC feedback DA () to a loop filter (). Thereby, operation of the delta-sigma modulator is stabilized.