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:
Apr. 14, 2009
Filed:
May. 01, 2006
Ruediger Ganz, Freising, DE;
Ruediger Ganz, Freising, DE;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A transponder device comprises an integrated CMOS circuit with a semiconductor substrate. A first rectifying diode (DS) is formed by the substrate diode of the CMOS circuit. A first MOS transistor structure (DR) and a second MOS transistor structure (DR) have their channels connected in series such that they function as a second rectifying diode, the cathode of the first rectifying diode being connected to the anode of the second rectifying diode. The first MOS transistor structure (DR) and the second MOS transistor structure (DR) are spaced from each other such that a distance between the two MOS transistor structures is large enough that a parasitic npn-structure formed within the substrate by the first and the second MOS structures has a negligible current gain.