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:
Jul. 07, 2009
Filed:
Mar. 12, 2007
Sang Gyu Park, Gyunggi-Do, KR;
Chang Soo Yang, Gyunggi-Do, KR;
Kwang Du Lee, Jeonlanam-Do, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon, Gyunggi-do, KR;
Abstract
In a DC offset cancellation circuit, an operational amplifier is provided with an inverse terminal, a non-inverse terminal and an output terminal. A first resistor is connected to the non-inverse terminal. A second resistor connected between the inverse terminal and the output terminal. A DC offset cancellation resistor is connected between the inverse terminal and the non-inverse terminal. Also, in each of first and second DC offset cancellation circuits of the programmable gain amplifier, an operational amplifier is provided with an inverse terminal, a non-inverse terminal and an output terminal. A first resistor is connected to the non-inverse terminal. A second resistor is connected between the inverse terminal and the output terminal. A DC offset cancellation circuit is connected between the inverse terminal and the non-inverse terminal. Here, the first and second DC offset cancellation circuits are connected with each other in series.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile