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:
Aug. 17, 2004
Filed:
Jun. 13, 2003
Applicant:
Inventor:
Gabriele Manganaro, Boxborough, MA (US);
Assignee:
Engim, Inc., Acton, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/66 ;
U.S. Cl.
CPC ...
H03M 1/66 ;
Abstract
A digital-to-analog converter (DAC) with high linearity includes a switched capacitor amplifier removably coupled to a capacitor array. The result of the conversion by the capacitor array is sampled by the switched capacitor amplifier directly from the capacitor in the most significant cell in the array. The switched capacitor amplifier includes a memory capacitor and a feedback capacitor. The memory capacitor provides the initial output voltage corresponding to the result of the conversion when coupled to the capacitor array and stores the output voltage while the feedback capacitor is reset.