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. 28, 2009
Filed:
Sep. 24, 2007
Applicants:
Shigeto Kobayashi, Gifu, JP;
Atsushi Wada, Ogaki, JP;
Inventors:
Shigeto Kobayashi, Gifu, JP;
Atsushi Wada, Ogaki, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 3/45 (2006.01);
U.S. Cl.
CPC ...
Abstract
Connected to a differential transistor pair are a load current source and a tail current source. A bias circuit controls current generated by the load current source. A first self-bias switch is provided between a gate and a drain of a first input transistor; and a second self-bias switch is provided between a gate and a drain of a second input transistor, where the first input transistor and the second input transistor constitute the differential transistors pair. An external bias switch is provided between the bias circuit and the load current source.