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:
Jun. 04, 2019
Filed:
Sep. 26, 2018
Applicant:
Qualcomm Incorporated, San Diego, CA (US);
Inventors:
Chao Song, San Diego, CA (US);
Zhengzheng Wu, Santa Clara, CA (US);
Haitao Cheng, San Diego, CA (US);
Ye Lu, San Diego, CA (US);
Assignee:
QUALCOMM Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 5/00 (2006.01); H01L 49/02 (2006.01); H01L 27/06 (2006.01); H03K 19/20 (2006.01);
U.S. Cl.
CPC ...
H03K 5/00 (2013.01); H01L 27/0629 (2013.01); H01L 28/86 (2013.01); H03K 19/20 (2013.01); H03K 2005/00019 (2013.01);
Abstract
In certain aspects, an integrated circuit comprises a signal path having a path delay from an input to an output, wherein the signal path comprises a path capacitor having a path capacitance. The integrated circuit also comprises a variation tracking circuit coupled to the signal path, wherein the variation tracking circuit comprises a tracking resistor have a tracking resistance, and wherein a product of the tracking resistance and the path capacitance is substantially constant over process variation.