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:
Feb. 19, 2002
Filed:
Apr. 26, 2000
Applicant:
Inventor:
John W. Fattaruso, Dallas, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/120 ; H01L 2/18244 ; H01L 2/18222 ;
U.S. Cl.
CPC ...
H01L 2/120 ; H01L 2/18244 ; H01L 2/18222 ;
Abstract
An integrated circuit and method of fabrication are disclosed for achieving electrical isolation between a spiral inductor and an underlying silicon substrate using standard semiconductor manufacturing process flow. A spiral conductor with square windings is formed in metal layer ( ) patterned so that straight runs of successive turns ( ) overlie corresponding runs of concentric square rings ( ) formed in underlying metal layer ( ). A unity gain voltage buffer ( ) connects each ring ( ) with a respective overlying turn ( ).