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:
May. 19, 1987
Filed:
Mar. 07, 1985
Applicant:
Inventors:
Simon M Law, Torrance, CA (US);
Thierry L Watteyne, Rancho Palos Verdes, CA (US);
Dung N Tran, Wescosville, PA (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
3403 / ; 3403 / ; 3403 / ;
Abstract
A weighted capacitor digital to analog converter is disclosed which requires only one stage and one conversion step. By the use of two reference voltages and two groups of capacitors in parallel, various capacitors in these groups can be selectively switched from the reference voltages to ground potential in response to input binary digit signals thereby presenting a predetermined amount of voltage to the output amplifier depending upon the number and particular combination of capacitors switched or non-switched to ground.