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:
Oct. 25, 2022
Filed:
Feb. 23, 2021
Applicant:
Xilinx, Inc., San Jose, CA (US);
Inventors:
Kai-An Hsieh, Tainan, TW;
Tan Kee Hian, Singapore, SG;
Assignee:
XILINX, INC., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 5/24 (2006.01); H03H 7/38 (2006.01); H03H 7/06 (2006.01);
U.S. Cl.
CPC ...
H03K 5/24 (2013.01); H03H 7/06 (2013.01); H03H 7/38 (2013.01);
Abstract
Embodiments herein describe placing a filter network at one of the inputs of the comparator to avoid injecting unequal amounts of kickback noise into the inputs of the comparator. In one embodiment, the filter network matches the impedance seen at the inputs of the comparator. As a result, the amount of kickback noise is essentially equal at the inputs even though the input signals may be at different frequencies. Thus, the kickback noise is essentially cancelled out so that this noise has little to no impact on the output of the comparator.