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:
Jan. 16, 2007
Filed:
Dec. 01, 2005
Vitor Pereira, Azueira, PT;
Paulo Pereira, Sines, PT;
Vitor Pereira, Azueira, PT;
Paulo Pereira, Sines, PT;
Integration Associates Inc., Mountain View, CA (US);
Abstract
A shared voltage reference circuit for a codec is shown that includes a voltage reference circuit for producing a reference voltage. A first sample and hold circuit has a first capacitor coupled to an output of the voltage reference circuit through a first switch controlled by a first phase of a sample clock signal for the codec. A second sample and hold circuit has a second capacitor coupled to the output of the voltage reference circuit through a second switch controlled by a second phase of the sample clock signal. A clock generator circuit generates the first and second phases of the sample clock signal, where the first and second phases are non-overlapping.