Title: Oscillator and data processing equipment using the same and voltage control oscillator and data processing equipment using voltage control oscillator
Application Number: 200610144470 Application Date: 2006.11.08
Publication Number: 1964183 Publication Date: 2007.05.16
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03B5/12;H03L7/00
Applicant(s) Name: Renesas Tech Corp. Address:
Inventor(s) Name: Nakamura Takahiro;Masuda Toru;Kitamura Tomomitsu;H
Attorney & Agent: jixiang gang
Abstract:
    An LC resonant circuit of an oscillator includes a parallel circuit of an inductor, a first fine adjustable capacitor and a first capacitor bank, and a series circuit of a second fine adjustable capacitor and a second capacitor bank. A frequency conversion gain of the oscillator is the sum of a frequency conversion gain of the oscillator based upon the first fine adjustable capacitor which decreases according to increase of a capacitance value of the capacitor bank and a frequency conversion gain based upon the second fine adjustable capacitor which increases according to increase of a capacitance value of the second capacitor bank. Accordingly, an LC resonant circuit for an oscillator with reduced fluctuation of a frequency conversion gain, and an oscillator and a data processing equipment using the same are provided.
Time: 15
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