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, 2011
Filed:
May. 14, 2009
Masato Ikeda, Tokyo, JP;
Tokio Miyashita, Kanagawa-ken, JP;
Masato Ikeda, Tokyo, JP;
Tokio Miyashita, Kanagawa-ken, JP;
Kabushiki Kaisha Nihon Micronics, Tokyo, JP;
NES Co., Ltd, Saitama-ken, JP;
Abstract
An amplifier circuit with favorable linearity is provided. An amplifier of the present invention is provided with an amplifier MOS transistor, a diode-connected transistor block for negative feedback source impedance constituted by series-parallel connection of the limited number (including 0) of the diode-connected MOS transistors and connected to a source side of the amplifier MOS transistor, and a diode-connected transistor block for load constituted by series-parallel connection of the limited number of the diode-connected MOS transistors and connected to a drain side of the amplifier MOS transistor. A voltage gain is configured to be determined by a ratio of the sum of source impedance of the amplifier MOS transistor and the impedance of the diode-connected transistor block for negative feedback source impedance to the impedance of the diode-connected transistor block for load.