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:
Nov. 18, 2003
Filed:
Apr. 25, 2002
Applicant:
Inventor:
Alexander Bugeja, Acton, MA (US);
Assignee:
Engim, Inc., Acton, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/20 ; H03M 1/66 ;
U.S. Cl.
CPC ...
H03M 1/20 ; H03M 1/66 ;
Abstract
A method and circuit structure scale the power consumption of a current mode digital/analog converter (DAC) in proportion to performance parameters, such as sampling speed (i.e., clock samples per second) and resolution (number of bits) under programmable control. In one embodiment, a current mode segmented DAC provided approaches the performance of custom implementations designed for specific combinations of these parameters, across a wide range of such parameters by varying current relative to the sampling rate and the resolution and by selectively enabling current sources in the DAC.