Oscillators – Electromechanical resonator – Crystal
Reexamination Certificate
2007-03-06
2007-03-06
Chang, Joseph (Department: 2817)
Oscillators
Electromechanical resonator
Crystal
C331S160000, C331S183000
Reexamination Certificate
active
10949902
ABSTRACT:
Circuits and methods for controlling the amplitude of oscillation of a crystal. In one example, a circuit may include a peak detector; a first voltage-to-current converter; a first current-to-voltage converter coupled with the first voltage-to-current converter; a second voltage-to-current converter; a second current-to-voltage converter coupled with the second voltage-to-current converter; and a differential amplifier; wherein a ratio between a size of first voltage-to-current converter and a size of the second voltage-to-current converter is used to control the gain of the circuit.
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Brownstein Hyatt Farber Schreck, P.C.
Chang Joseph
Cypress Semiconductor Corporation
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