Crystal oscillator circuit

Details Crystal oscillator circuit Crystal oscillator circuit

2007-06-05

2007-06-05

Kinkead, Arnold (Department: 2817)

Oscillators

Electromechanical resonator

Crystal

C331S1160FE, C331S1160FE

Reexamination Certificate

active

10940170

ABSTRACT:
An object of the invention is to provide an oscillator circuit employing an ECL to prevent variation in oscillation frequency and oscillation gain, and to simplify design. The construction is such that in a crystal oscillator circuit comprising: a resonance circuit consisting of a crystal element as an inductor component and a dividing capacitor, an oscillation amplifier comprising an ECL driven by a power supply voltage connected to the resonance circuit, and a pull-down resistor between an output terminal of the ECL and ground, there is provided an AC impedance amplifier circuit connected in series to the pull-down resistor.

REFERENCES:
patent: 4479259 (1984-10-01), Fenk

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