Voltage control type temperature compensation piezoelectric...

Details Voltage control type temperature compensation piezoelectric... Voltage control type temperature compensation piezoelectric...

2009-11-16

2011-11-15

Gannon, Levi (Department: 2817)

Oscillators

Electromechanical resonator

Crystal

C331S1160FE, C331S176000

Reexamination Certificate

active

08058941

ABSTRACT:
A voltage control type temperature compensation piezoelectric oscillator, includes: a voltage control type oscillation circuit; an automatic frequency control (AFC) circuit outputting a control voltage for controlling an oscillation frequency of the voltage control type oscillation circuit based on an external control voltage; a temperature compensation voltage generating circuit generating a temperature compensation voltage; and a gain variable circuit varying a gain of the temperature compensation voltage. In the oscillator, the gain variable circuit is controlled by the control voltage outputted from the AFC circuit, and the oscillation frequency of the voltage control type oscillation circuit is controlled by an output voltage of the gain variable circuit.

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patent: 6731181 (2004-05-01), Fukayama et al.
patent: 2002-217643 (2002-08-01), None

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