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, 1999
Filed:
Dec. 12, 1997
Kwo-Jen Liu, San Jose, CA (US);
Chuck Cheuk-Wing Cheng, Saratoga, CA (US);
Scenix Semiconductor, Inc., Santa Clara, CA (US);
Abstract
A single ended sensing scheme amplifies the logic state stored within a non-volatile memory circuit by relying upon three stages, a clamping circuit, a first operational amplifier and a second operational amplifier. The clamping circuit clamps the voltage at a voltage level with a small voltage swing between the logic states. The first stage and second stage operational amplifiers increase the clamped voltage level. A reference memory circuit ensures that the sensing scheme output is properly adjusted to compensate for voltage and temperature variations as well as noise injection from the power supply and ground.