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:
May. 08, 2001
Filed:
Dec. 18, 1997
Applicant:
Inventor:
Solomon Ng, Singapore, SG;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03L 5/00 ;
U.S. Cl.
CPC ...
H03L 5/00 ;
Abstract
The invention relates to a level shifter coupled to a circuit of a predetermined value, includes a differential amplifier with a first input coupled to the reference voltage and a second input receiving an intermediate voltage; a low impedance source providing the reference voltage; and a first operational amplifier providing the intermediate voltage from an input voltage. The output of the low impedance source is directly connected to the first input of the differential amplifier and the gain of the first operational amplifier is set to obtain a desired ratio between the reference voltage and the intermediate voltage.