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. 21, 1993
Filed:
Mar. 13, 1992
Applicant:
Inventors:
Sen-Jung Wei, Hyattsville, MD (US);
Hung C Lin, Silver Spring, MD (US);
Assignee:
University of Maryland, College Park, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341133 ; 341159 ;
Abstract
A pair of n-peaked resonant tunneling diodes with series resistance are connected in series across a supply voltage to form a digitizer, which has 2n+1 stable operating points. There are n high current operating points and n+1 low current operating points, corresponding to '1' and '0' logic levels. For an n-bit analog-to-digital converter, the analog input voltage is divided into n binary-weighted fractions and applied to n digitizers, which latch the divided voltages into binary currents serving as digital output.