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. 15, 1989
Filed:
Jun. 06, 1988
Applicant:
Inventor:
Nello G Sevastopoulos, San Jose, CA (US);
Assignee:
Linear Technology Corporation, Milpitas, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330107 ; 307520 ; 330-9 ;
Abstract
A switched capacitor filter having DC gain accuracy and low DC offset includes an operational amplifier with a resistor (or switched capacitor) connecting one input of the operational amplifier to a signal input terminal. A first capacitor provides a first feedback loop between the output and an input of the operational amplifier, and an active network is serially connected with another resistor (or switched capacitor) as a filtered feedback loop.
Sevastopoulos, Nello. (1989). Clock-sweepable low-pass filter having dc gain accuracy and reduced dc (U.S. Patent No. 4857860). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4857860
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