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:
Jun. 23, 1992
Filed:
Sep. 17, 1990
Applicant:
Inventors:
Kiyoshi Kase, Chiba, JP;
Hisashi Sekiguchi, Aizu-wakamatsu, JP;
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341120 ; 341159 ;
Abstract
Apparatus and procedure for testing a flash analog-to-digital converter on a chip including a first NOR gate having a plurality of inputs, one each connected to each normal output of the comparators and a second NOR gate having a plurality of inputs, one each connected to each inverted output of the comparators. The output currents of the NOR gates are monitored to determine the states of the comparators when various input voltages are supplied. All comparators are tested for operation.