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:
Jun. 13, 2000
Filed:
Jan. 05, 1998
Applicant:
Inventors:
Assignee:
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ; G01R / ;
U.S. Cl.
CPC ...
331 44 ; 331 57 ; 331 64 ; 3311 / ; 324 7611 ;
Abstract
An improved oscillator test structure is disclosed. A structure according to one embodiment includes an odd plurality of first transistor pairs formed on a predetermined area of a semiconductor substrate. The transistor pairs are electrically connected in a serial ring. The structure also includes at least one second transistor pair, also formed within the predetermined area on the substrate, but electrically isolated from the odd plurality of first transistor pairs.