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:
Mar. 01, 2022
Filed:
Mar. 07, 2018
Applicant:
Xiamen Ux High-speed Ic Co., Ltd., Fujian, CN;
Inventors:
Assignee:
XIAMEN UX HIGH-SPEED IC CO., LTD., Fujian, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/16 (2006.01); H03F 3/45 (2006.01); H03F 1/02 (2006.01); H03K 5/24 (2006.01);
U.S. Cl.
CPC ...
H03F 3/16 (2013.01); H03F 2200/171 (2013.01); H03F 2200/375 (2013.01); H03K 5/24 (2013.01);
Abstract
A DC offset cancellation circuit and a DC offset cancellation method are disclosed. The DC offset cancellation circuit comprises a high-speed amplifier, a voltage comparator, a microprocessor, and a digital-to-analog converter. The high-speed amplifier comprises an input stage with a DC offset cancellation function, an amplification stage, and an output buffer stage. The voltage comparator is connected to the output buffer stage. The microprocessor is connected to the voltage comparator. The digital-to-analog converter is connected to the microprocessor. The digital-to-analog converter is connected to the input stage.