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:
Jun. 17, 2008
Filed:
Oct. 27, 2006
Multi-bit sigma-delta modulator and digital-to-analog converter with one digital-to-analog capacitor
Yi Gyeong Kim, Daejeon, KR;
Chong Ki Kwon, Daejeon, KR;
Jong Dae Kim, Daejeon, KR;
Min Hyung Cho, Daejeon, KR;
Seung Chul Lee, Daejeon, KR;
Gyu Hyun Kim, Daejeon, KR;
Yi Gyeong Kim, Daejeon, KR;
Chong Ki Kwon, Daejeon, KR;
Jong Dae Kim, Daejeon, KR;
Min Hyung Cho, Daejeon, KR;
Seung Chul Lee, Daejeon, KR;
Gyu Hyun Kim, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
A digital-to-analog converter (DAC) for a sigma-delta modulator is provided. The DAC has a switched capacitor structure using an operational amplifier (OP amp) and performs a function exceeding 3-level using a switching method employing only one capacitor in single ended form. Thus, DAC non-linearity caused by capacitor mismatching does not occur, and the number of output levels of the DAC is increased. Also, the DAC capacitor may be applied to a general DAC to increase the ratio of DAC output levels to capacitors.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile