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:
Mar. 18, 2014
Filed:
Jun. 03, 2008
Applicant:
Richard Gu, Plano, TX (US);
Inventor:
Richard Gu, Plano, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H03B 1/00 (2006.01); H03K 5/00 (2006.01); H04B 1/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
One embodiment of an apparatus for cancelling supply noise includes an input circuit operable to receive an input from a charge pump and a drive circuit connected to an output of the input circuit. The drive circuit is operable to provide an output matching the input to the input circuit when a voltage source powering the input circuit and the drive circuit is stable, and to introduce a contrary voltage change on the buffered output when the voltage source is noisy, with the contrary voltage change being contrary to a voltage change on the voltage source due to noise.