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.:

US 9225351 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 29, 2015

Filed:

Nov. 11, 2014
Applicant:

Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;

Inventors:

Tetsuro Itakura, Tokyo, JP;

Masanori Furuta, Kanagawa, JP;

Akihide Sai, Kanagawa, JP;

Junya Matsuno, Kanagawa, JP;

Yohei Hatakeyama, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/12 (2006.01); H03M 1/00 (2006.01); H03F 3/45 (2006.01); H03M 1/06 (2006.01); H03M 1/36 (2006.01);
U.S. Cl.
CPC ...
H03M 1/002 (2013.01); H03F 3/45273 (2013.01); H03M 1/0604 (2013.01); H03F 2200/267 (2013.01); H03F 2203/45034 (2013.01); H03M 1/00 (2013.01); H03M 1/12 (2013.01); H03M 1/365 (2013.01);
Abstract

In one embodiment, a current amplifier circuit includes a first transistor, a first resistor, a second transistor, a second resistor, a first passive element, and a control circuit. The first transistor has a first terminal, a second terminal, and a control terminal. The first resistor has one end connected to the first terminal of the first transistor. The second transistor has a first terminal, a second terminal, and a control terminal. The second resistor has one end connected to the first terminal of the second transistor. The first passive element is connected between the first terminals of the first transistor and the second transistor. The control circuit controls at least one of voltage at the control terminals of the first transistor and the second transistor such that the voltage at the other end of the first resistor becomes equal to the voltage at the other end of the second resistor.


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