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:
Dec. 29, 1992
Filed:
Feb. 28, 1992
Applicant:
Inventor:
Paul W Self, Santa Clara, CA (US);
Assignee:
Avasem Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
331 57 ; 331-8 ; 331 34 ; 331 74 ; 331186 ; 307475 ;
Abstract
A high speed voltage controlled oscillator (VCO) providing for low sensitivity to the noise on the integrated circuit's (IC) power supply. The VCO circuit creates a supply voltage for a ring oscillator independent of the IC's power supply thereby controlling the frequency of operation independent of variations on the IC's power supply. A high speed CMOS level shifting circuit provides for converting outputs of the VCO with low logic level and varying frequencies to a signal with a full CMOS logic level and low duty cycle distortion.