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:
Jul. 14, 2026
Filed:
Apr. 02, 2024
Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;
Ping-Hsiang Huang, Taichung City, TW;
Chu Fu Chen, Zhubei City, TW;
Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;
Abstract
A system includes a current source, a current supply circuit, a first test transistor, a second test transistor, a measurement circuit, and a ring oscillator circuit. The current supply circuit has a first terminal coupled to a first voltage supply terminal, a second terminal coupled to a first terminal of the current source, and a third terminal. The first test transistor and the second test transistor have first terminals coupled to the third terminal of the current supply circuit and second terminals coupled to a second voltage supply terminal. The measurement circuit has a first terminal coupled to the third terminal of the current supply circuit and a second terminal coupled to the current source. The ring oscillator circuit has a first terminal coupled to a control terminal of the first test transistor and a second terminal coupled to a control terminal of the second test transistor.