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:
Aug. 13, 2002
Filed:
Dec. 20, 2000
Andrea Bonelli, Villeneuve Loubet, FR;
Francois V. E. Bauduin, La Gaude, FR;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A high-impedance current source having an enhanced compliance voltage. The current source preferably has a means for generating a biasing current and a first current mirror stage having a first transistor M coupled to a second transistor M . A second current mirror stage having a third transistor M coupled to a fourth transistor M acts as a feedback circuit. A stabilization circuit having a fifth transistor M coupled to a sixth transistor M are also included. The stabilization circuit is coupled between the first and second current mirror stages and an output circuit having a seventh transistor M is connected to the stabilization circuit between the first and second current mirror stages. The current mirror circuit has a low compliance voltage, enhanced operating characteristics and enhanced dynamics which eliminate the need for OTAs.