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. 19, 2000
Filed:
Apr. 28, 1998
Applicant:
Inventors:
Steven A Martinez, Tucson, AZ (US);
Paul M Henry, Tucson, AZ (US);
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
327270 ; 327276 ; 327281 ;
Abstract
To generate a signal delay, a current source, a reference voltage generator and a comparator are turned on. Once turned on, the current source raises the voltage across an initially discharged capacitor to a minimum required threshold. The comparator then compares the capacitor voltage to the reference voltage thereby to generate the delay signal. Thereafter, the current source, the reference voltage generator and substantial blocks of circuitry in the comparator are switched off to reduce quiescent power consumption.