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:
Nov. 05, 2019
Filed:
Feb. 23, 2017
Applicant:
Xilinx, Inc., San Jose, CA (US);
Inventor:
Kevin Zheng, San Jose, CA (US);
Assignee:
XILINX, INC., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/08 (2006.01); H03K 3/03 (2006.01); H03L 7/099 (2006.01); H03H 11/04 (2006.01);
U.S. Cl.
CPC ...
H03L 7/0805 (2013.01); H03H 11/0472 (2013.01); H03K 3/0315 (2013.01); H03L 7/0995 (2013.01); H03H 2210/021 (2013.01); H03H 2210/04 (2013.01);
Abstract
An example circuit includes: an inverter-based filter; a voltage regulator having an input and an output, the output of the voltage regulator providing a supply voltage to bias the inverter-based filter; a ring oscillator having a supply input and an output, the supply input of the ring oscillator coupled to the output of the voltage regulator; a control circuit coupled to the output of the ring oscillator and the input of the voltage regulator, the control circuit configured detect an oscillation frequency of the ring oscillator and to adjust the voltage regulator in response to the oscillator frequency.