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. 22, 2019
Filed:
Feb. 14, 2017
Xilinx, Inc., San Jose, CA (US);
Ankur Jain, Sunnyvale, CA (US);
Jaeseo Lee, San Jose, CA (US);
Richard W. Swanson, San Jose, CA (US);
XILINX, INC., San Jose, CA (US);
Abstract
In an example, a voltage-controlled oscillator (VCO) includes: an oscillator having a supply input; and a voltage regulator, coupled to the supply input. The voltage regulator includes: a first transistor and a second transistor providing a first source-coupled transistor pair, and a third transistor and a fourth transistor providing a second source-coupled transistor pair; an active load coupled to drains of the first, second, third, and fourth transistors; a first current source coupled to sources of the first and second transistors, and a second current source coupled to sources of the third and fourth transistors; a fifth transistor having a source and a drain coupled to the source and the drain, respectively, of the first transistor; and a sixth transistor having a source and a drain coupled to the source and the drain, respectively, of the third transistor.