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:
May. 28, 2002
Filed:
Mar. 24, 2000
Applicant:
Inventors:
Indumini Ranmuthu, Plano, TX (US);
Echere Iroaga, Garland, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 3/45 ; H03F 1/14 ; G11B 5/09 ; G11B 5/02 ;
U.S. Cl.
CPC ...
H03F 3/45 ; H03F 1/14 ; G11B 5/09 ; G11B 5/02 ;
Abstract
A magneto-resistive head preamplifier structure has a difference amplifier with cross-coupled transistors configured to cancel the adverse effects on preamplified output signals due to parasitic capacitance associated with the difference amplifier transistors. The cross-coupled transistors extend the useable bandwidth of the preamplifier by substantially reducing internally generated thermal noise.