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. 23, 2007
Filed:
Dec. 20, 2005
Gong Tom Lei, Austin, TX (US);
Thuan Luong Nguyen, Austin, TX (US);
Daniel John Allen, Austin, TX (US);
John Laurence Melanson, Austin, TX (US);
Gong Tom Lei, Austin, TX (US);
Thuan Luong Nguyen, Austin, TX (US);
Daniel John Allen, Austin, TX (US);
John Laurence Melanson, Austin, TX (US);
Cirrus Logic, Inc., Austin, TX (US);
Abstract
A method of sampling an input signal in a delta-sigma modulator having at least an integrator stage and a feedback digital-to-analog converter (DAC) stage includes sampling an input signal at a sampling rate by alternately utilizing the two sampling capacitors during two sampling cycles such that the two sampling capacitors are each being utilized at half the rate of the sampling rate. Samples from the two sampling capacitors are summed at the sampling rate at an intermediate node with a feedback samples provided by the feedback DAC stage at the sampling rate to generate output samples which are output from integrator stage at the sampling rate.