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:
Dec. 27, 1983
Filed:
Dec. 14, 1981
Applicant:
Inventor:
Brian M Spinks, Austin, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; G01R / ;
U.S. Cl.
CPC ...
307530 ; 307354 ; 307360 ;
Abstract
A sense amplifier having a conventional three transistor network for charging a column to a first predetermined voltage uses a depletion transistor to charge the column beyond the first predetermined voltage for detection of a memory cell which is in a non-conducting state. A memory cell in a conducting state draws enough current to prevent the depletion transistor from charging the column beyond the first predetermined voltage. A logic '1' is detected when the column charges beyond the first predetermined voltage to at least a second predetermined voltage, whereas a logic '0' is detected when the column does not reach the second predetermined voltage.