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:
Feb. 24, 2004
Filed:
Oct. 01, 2001
Ian Andrew Galton, Del Mar, CA (US);
Jorge Alberto Grilo, Foothill Ranch, CA (US);
Kevin Jia-Nong Wang, San Diego, CA (US);
Silicon Wave, Inc., San Diego, CA (US);
Abstract
A novel mismatched-shaping DAC architecture is described. The inventive DAC partially spectrally shapes data conversion errors. In accordance with the present invention, the DAC mismatch-shaping function is fully effective for input signal amplitude levels that are relatively low (i.e., close to mid-scale), however, the mismatch-shaping function is not fully effective for input signal amplitude levels that are relatively high. This results in the simplification in complexity, reduced power dissipation, and shortened propagation delays associated with the mismatch-shaping DAC digital logic circuitry. Exemplary delta-sigma ADC and DAC architectures adapted for use with the present inventive partial mismatch-shaping DAC are also described.