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:
Jun. 29, 2021
Filed:
Jul. 03, 2019
Beijing Smartchip Microelectronics Technology Company Limited, Beijing, CN;
State Grid Information & Telecommunication Group Co., Ltd, Beijing, CN;
State Grid Corporation of China, Beijing, CN;
Yubo Wang, Beijing, CN;
Xiaoke Tang, Beijing, CN;
Yi Hu, Beijing, CN;
Dejian Li, Beijing, CN;
Jin Shao, Beijing, CN;
Xi Feng, Beijing, CN;
Wennan Feng, Beijing, CN;
Jiali Hou, Beijing, CN;
BEIJING SMARTCHiP MICROELECTRONICS TECHNOLOGY COMP, Beijing, CN;
Abstract
An inverse pseudo fully-differential amplifier having a common-mode feedback control circuit and a method for maintaining a stable output common-mode level are provided. The inverse pseudo fully-differential amplifier includes the pseudo fully-differential operation circuit and a common-mode feedback control circuit. The pseudo fully-differential operation circuit includes inverter amplifiers () and (). The inverter amplifiers () and () respectively have a first feedback control terminal and a second feedback control terminal. Input terminals of the common-mode feedback control circuit are respectively connected with output terminals of the inverter amplifier () and (), and are configured to detect common-mode output voltages of the inverter amplifier () and (). An output terminal of the common-mode feedback control circuit is connected with the first feedback control terminal and the second feedback control terminal, and is configured to generate common-mode feedback to the inverter amplifiers () and () to maintain a stable common mode output level.