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:
Aug. 29, 2000
Filed:
Apr. 20, 1998
Applicant:
Inventor:
John B Hughes, Hove, GB;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03B / ;
U.S. Cl.
CPC ...
327108 ; 327112 ; 326 87 ;
Abstract
A current memory cell comprises a fine MOS memory transistor (T1) and a coarse MOS memory transistor (T2) connected in series between two power supply rails. Such current memory cells are preferably designed so that the sum of the voltage drops across the coarse and fine memory transistors when diode connected is equal to the supply voltage. In order to achieve this while leaving flexibility in choosing the transistor saturation voltages an auxiliary power rail (V.sub.dda) is generated using as a reference the voltage drops across two diode connected transistors (T6, T7) which conduct a current equal to the bias current in the current memory cell (3).