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:
Dec. 22, 2009
Filed:
Jul. 18, 2008
Guo Jun Ren, San Jose, CA (US);
Qi Zhang, Chandler, AZ (US);
Guo Jun Ren, San Jose, CA (US);
Qi Zhang, Chandler, AZ (US);
Xilinx, Inc., San Jose, CA (US);
Abstract
An output circuit providing an adjustable output amplitude and common-mode voltage is described. The output circuit includes at least one driver circuit and a common-mode feedback circuit including a first replica circuit of the at least one driver circuit. The common-mode feedback circuit is coupled to receive a first bias and provide an output coupled to the at least one driver circuit. The output circuit may also include a current circuit having a configurable resistor and a second replica circuit of the at least one driver circuit. The current circuit may be coupled to receive a second bias and to provide an output coupled to the at least one driver circuit and the common-mode feedback circuit.