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. 04, 1987
Filed:
Apr. 29, 1986
Applicant:
Inventors:
Assignee:
Northern Telecom Limited, Montreal, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03F / ;
U.S. Cl.
CPC ...
307520 ; 330303 ; 330306 ;
Abstract
A CMOS integrated filter includes a passive network of resistive and capacitive paired elements and a first differential amplifier, for implementing a second order low pass filter function. A second amplifier is connected in voltage following configuration at an input of the first amplifier. A filter output is provided by an output of the second amplifier.