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:
Dec. 23, 2025
Filed:
Nov. 06, 2023
Applicant:
Rohm Co., Ltd., Kyoto, JP;
Inventor:
Tetsuya Ogawa, Kyoto, JP;
Assignee:
ROHM CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/28 (2006.01); G01R 31/52 (2020.01); G01R 31/54 (2020.01); H03F 3/187 (2006.01); H04R 3/00 (2006.01);
U.S. Cl.
CPC ...
G01R 31/2825 (2013.01); G01R 31/52 (2020.01); G01R 31/54 (2020.01); H03F 3/187 (2013.01); H04R 3/00 (2013.01); H03F 2200/03 (2013.01);
Abstract
A current mirror circuit generates test currents supplied to a first output pin and a second output pin. The current mirror circuit includes first to sixth transistors and first to fifth switches. The first switch and the second switch are turned on in a first mode requiring a large amount of test current and turned off in a second mode requiring a small amount of a first test current and a second test current.