Crystal oscillator bias stabilizer

Details Crystal oscillator bias stabilizer Crystal oscillator bias stabilizer

1995-08-24

1996-08-13

Mis, David

Oscillators

Solid state active element oscillator

Transistors

331158, 331175, 331185, H03B 536

Patent

active

055460550

ABSTRACT:
A dynamic bias stabilization device providing significant control of the operating point and frequency stability of a low-power crystal oscillator includes an inverting CMOS amplifier as its primary gain element and a filtered resistive current source to supply the inverting amplifier with operating power. A number of MOS transmission gates and integrated capacitors configured in a T-type network are used as the amplifier feedback element. The control voltages for these feedback transmission gates are derived from the current source which also supplies power to the crystal oscillator amplifier.

REFERENCES:
patent: 5025230 (1991-06-01), Kondo et al.
Robert J. Matthys, Crystal Oscillator Circuits, pp. 42-45 John Wiley & Sons, 1983.
Robert J. Matthys, Crystal Oscillator Circuits, pp. 159-196 John Wiley & Sons, 1983.

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