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:
Jul. 01, 1997
Filed:
Mar. 15, 1996
Applicant:
Inventors:
Todd K Moyer, Wilsonville, OR (US);
Daniel M Clementi, Doylestown, PA (US);
Assignee:
ICS Technologies, Inc., Valley Forge, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
331 34 ; 331111 ; 331143 ; 3311 / ;
Abstract
A voltage controlled oscillator having substantial frequency dependence on a parallel RC timing element including a voltage-variable resistance element, such as a MOSFET biased in the triode region. One terminal of the timing element can be connected to ground. The voltage used to tune the timing element, to lock the voltage controlled oscillator to a reference frequency can be used to control similar timing elements integrated upon the same circuit, for example a continuous-time filter in an ethernet transceiver. The oscillator frequency is substantially independent of variations in supply voltage.