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:
Oct. 09, 2007
Filed:
May. 01, 2006
Applicants:
Erhan Ozalevli, Atlanta, GA (US);
Paul Hasler, Atlanta, GA (US);
Inventors:
Erhan Ozalevli, Atlanta, GA (US);
Paul Hasler, Atlanta, GA (US);
Assignee:
Georgia Tech Research Corporation, Atlanta, GA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/66 (2006.01);
U.S. Cl.
CPC ...
Abstract
A digital to analog converter (DAC) includes an operational amplifier and a plurality of ladder elements. Each ladder element includes an epot for providing a voltage, a capacitor, and a switch for selecting between a first voltage and a reference voltage, and for providing the first selected voltage to the first capacitor. The output of the ladder elements are coupled to the inverting input of the operational amplifier. Alternatively, the ladder elements may use tunable floating-gate resistors.