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:
Apr. 11, 2017
Filed:
Apr. 01, 2015
Applicant:
National Cheng Kung University, Tainan, TW;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/06 (2006.01); H03M 1/80 (2006.01); H03M 1/66 (2006.01);
U.S. Cl.
CPC ...
H03M 1/808 (2013.01); H03M 1/0602 (2013.01); H03M 1/664 (2013.01);
Abstract
A digital to analog converter with output impedance compensation has an encoding unit, a current cell array, a summing unit and a compensation unit. The compensation unit is connected to output terminals of the DAC and provides a nonlinear impedance to compensate an original output impedance of the DAC. With the compensated output impedance, the SFDR performance and the linearity of the DAC are improved to obtain a superior input-to-output transfer curve.