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:
Apr. 14, 2026
Filed:
Mar. 21, 2023
Realtek Semiconductor Corporation, Hsinchu, TW;
Chih-Chiang Wang, Hsinchu, TW;
Realtek Semiconductor Corporation, Hsinchu, TW;
Abstract
A signal amplifying circuit includes an amplifier and a common mode feedback circuit. The amplifier generates first and second outputs. The common mode feedback circuit receives the first and second outputs, and controls an output common mode voltage of the first and second outputs to a first reference voltage. The common mode feedback circuit includes an output common mode voltage detection circuit, a pull-up circuit and a pull-down circuit. The output common mode voltage detection circuit generates first and second control signals according to the output common mode voltage. The pull-up circuit with a first conduction degree controlled by the first control signal controls the output common mode voltage to be positively correlated with the first conduction degree. The pull-down circuit with a second conduction degree controlled by the second control signal controls the output common mode voltage to be negatively correlated with the second conduction degree.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile