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:
Jul. 27, 2004
Filed:
Jan. 24, 2003
Applicant:
Inventors:
William G. J. Schofield, North Andover, MA (US);
Douglas A. Mercer, Bradford, MA (US);
Assignee:
Analog Devices, Inc., Norwood, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/66 ;
U.S. Cl.
CPC ...
H03M 1/66 ;
Abstract
Methods and devices for code independent switching in a digital-to-analog converter (DAC) are described. A synchronous digital circuit is triggered by a clocking signal and develops a digital data signal. A current steering circuit has a common source node for supplying current, and develops an analog output signal representative of the digital data signal. Any switching disturbances at the common source node are substantially data independent.