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. 24, 2002
Filed:
Aug. 21, 2000
Applicant:
Inventor:
Gang Zha, Shenzhen, CN;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 1/163 ; G01R 1/922 ; H03K 1/100 ;
U.S. Cl.
CPC ...
G01R 1/163 ; G01R 1/922 ; H03K 1/100 ;
Abstract
A temperature stable, integrated circuit full wave level detector incorporating a single stage operational amplifier design which does not require, as in prior art implementations, two operational amplifiers to perform a full wave rectification function on an input alternating current (“AC”) signal followed by a comparator to detect the resultant signal level. The full wave level detector of the present invention utilizes but a single amplifier and some additional peripheral components resulting in a saving in on-chip die area in an integrated circuit (“IC”) implementation while also exhibiting excellent temperature stability characteristics.