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:
Jan. 29, 2019

Filed:

Jan. 25, 2018
Applicant:

Ablic Inc., Chiba-shi, Chiba, JP;

Inventors:

Yuji Shiine, Chiba, JP;

Hirotaka Nakamura, Hamamatsu, JP;

Assignee:

ABLIC INC., Chiba-Shi, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/10 (2006.01); G05F 1/625 (2006.01); H01L 23/58 (2006.01);
U.S. Cl.
CPC ...
G05F 1/625 (2013.01); H01L 23/58 (2013.01);
Abstract

Provided is a leakage current compensation circuit including: a compensation MOS transistor, which has a drain and a source connected to each other, and a bulk connected to a ground terminal, and is configured to generate a compensation current that is equal in magnitude to a leakage current of a MOS transistor of a current output circuit; and a current mirror circuit, which has an input terminal connected to the drain and the source of the compensation MOS transistor, and an output terminal connected to the MOS transistor of the current output circuit. The leakage current compensation circuit includes the MOS transistor for compensation for the leakage current, which has a small area, and is capable of compensating for a gate leakage current.


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