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:
Oct. 14, 2003
Filed:
Jul. 05, 2000
Charvaka Duvvury, Plano, TX (US);
Bernhard H. Andresen, Dallas, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A structure is designed with an external terminal ( ) and a reference terminal ( ). A first transistor ( ) has a current path coupled to the external terminal and has a first control terminal ( ). A second transistor ( ) has a current path coupled between the current path of the first transistor and the reference terminal and has a second control terminal ( ). A bias circuit comprises a third transistor ( ) having a first conductivity type and a fourth transistor ( ) having a second conductivity type. The third and fourth transistors have respective current paths coupled in series to the reference terminal. The bias circuit is arranged to produce a first voltage at the first control terminal and a second voltage different from the first voltage at the second control terminal.