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:
Dec. 01, 2009
Filed:
Sep. 20, 2007
Paul G. Damitio, Tucson, AZ (US);
Ahmad Dashtestani, Tucson, AZ (US);
Paul G. Damitio, Tucson, AZ (US);
Ahmad Dashtestani, Tucson, AZ (US);
Texas Instruments Incorporated, Dalls, TX (US);
Abstract
An amplifier driver circuit () includes first (-) and second (-) feedback amplifiers including first (-) and second (-) upper current mirrors, respectively, and first (-) and second (-) lower current mirrors, respectively, first (-) and second (-) amplifier input stages receiving a common mode input signal, and first (-) and second (-) amplifier output stages coupled to outputs of the first and second amplifier input stages, respectively. Each current mirror has an input (IN) and first (OUT) and second (OUT) outputs. Upper bias terminals of the first (-) and second (-) amplifier input stages are coupled to the inputs (IN) of the first (-) and second (-) upper current mirrors, respectively, and are cross-coupled to the second outputs (OUT) of the second (-) and first (-) lower current mirrors, respectively. Lower bias terminals of the first (-) and second (-) amplifier input stages are coupled to the inputs (IN) of the first (-) and second (-) lower current mirrors, respectively, and are cross-coupled to the second outputs (OUT) of the second (-) and first (-) upper current mirrors, respectively, to oppose signals at the inputs (IN) of the current mirrors in response to the common mode input signal.