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:
Sep. 05, 2017
Filed:
Aug. 01, 2012
Madjid Hafizi, San Diego, CA (US);
Jie Xu, San Diego, CA (US);
Xiaohua Kong, San Diego, CA (US);
Nam V. Dang, San Diego, CA (US);
Madjid Hafizi, San Diego, CA (US);
Jie Xu, San Diego, CA (US);
Xiaohua Kong, San Diego, CA (US);
Nam V. Dang, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
A pre-driver circuit generates a driver bias signal based on a swing command, a driver impedance characteristic, and an input signal. A driver receives the driver bias signal and generates, in response, a driver signal having a swing and having an output impedance corresponding to the bias signal. Optionally, the driver receives power from a switchable one of multiple supply rails, according to the swing. Optionally, the driver has voltage controlled resistor elements and the driver bias signal is generated based on the swing command and a replica of the driver voltage controlled resistor elements.