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.

Date of Patent:
Feb. 01, 2011

Filed:

Sep. 24, 2009
Applicants:

Toshiharu Takaramoto, Kawasaki, JP;

Kunihiko Gotoh, Kawasaki, JP;

Inventors:

Toshiharu Takaramoto, Kawasaki, JP;

Kunihiko Gotoh, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 1/10 (2006.01);
U.S. Cl.
CPC ...
Abstract

There is provided a reference voltage generating circuit including: a first PN junction element (PN) whose forward voltage is a first voltage V; a second PN junction element (PN) having a current density different from the first PN junction element and whose forward voltage is a second voltage Vhigher than the first voltage V; and generating circuits (to) inputting the first voltage Vand the second voltage Vand generating a reference voltage expressed by A×V+A×(A×V−A×V) in which A, A, and Aare set to be coefficients, and in which Aand Aare different values.


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