Oscillation circuit capable of having stable oscillation in...

Details Oscillation circuit capable of having stable oscillation in... Oscillation circuit capable of having stable oscillation in...

2007-08-21

2009-08-11

Pascal, Robert (Department: 2817)

Oscillators

Electromechanical resonator

Crystal

C331S1160FE, C331S176000, C331S185000, C331S186000, C327S535000, C327S545000

Reexamination Certificate

active

07573346

ABSTRACT:
An oscillation circuit includes a constant current source, a current mirror circuit configured to receive a constant input current from the constant current source and to output a current proportional to the constant input current, a first inverter configured to be driven with a quartz resonator to oscillate, an operational amplifier configured to supply a power to the first inverter with a voltage equal to an input voltage thereof and a second inverter having a power supply terminal connected to the current mirror circuit and to the operational amplifier and configure to generate the input voltage for the operational amplifier.

REFERENCES:
patent: 7042299 (2006-05-01), Tachibana et al.
patent: 7088196 (2006-08-01), Ashida et al.
patent: 2003-283249 (2003-10-01), None

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