Average controlled (AC) resonator driver

Details Average controlled (AC) resonator driver Average controlled (AC) resonator driver

2006-06-13

2006-06-13

Mis, David (Department: 2817)

Oscillators

Solid state active element oscillator

Transistors

C331S1160FE, C331S154000, C331S158000, C331S183000

Reexamination Certificate

active

07061338

ABSTRACT:
Circuits and methods are given, to realize and implement an oscillator circuit with an Average Controlled (AC) Resonator Driver. A newly introduced additional Field Effect Transistor within a voltage average stabilizing regulation loop controlling the crystal oscillator's amplifier element produces an average voltage value stabilized sinusoidal oscillation signal which is then transformed into a square wave with a precise duty-cycle of exactly 50%. Said circuits and methods are designed in order to be implemented with a very economic number of components, capable to be realized with modern integrated circuit technologies.

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patent: 1143605 (2001-10-01), None
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“High-Performance Crystal Oscillator Circuits: Theory and Application”, by Vittoz et al., IEEE Jrnl. of Solid-State Circuits, vol. 23, No. 3, Jun. 1988, pp. 774-783.
“MOS Crystal Oscillator Design”, by Meyer et al., IEEE Jrnl. of Solid-State Circuits, vol. SC-15, No. 2, Apr. 1980, pp. 222-228.

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