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:
Sep. 07, 1982
Filed:
May. 09, 1980
Applicant:
Inventor:
Ernest A Carter, Austin, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
3403 / ; 3403 / ; 3403 / ; 3403 / ;
Abstract
In a successive-approximation charge-redistribution analog-to-digital converter which includes a binary weighted capacitive ladder network, an unknown analog input voltage is sampled only on the largest capacitor representing half the capacitance. The conversion phase proceeds utilizing all the capacitance and only half the reference voltage. This not only reduces circuit complexity, but also reduces problems associated with disruption of the charge stored on the capacitor.