Oscillator circuit with an inverter amplifier having reduced...

Details Oscillator circuit with an inverter amplifier having reduced... Oscillator circuit with an inverter amplifier having reduced...

2006-04-18

2006-04-18

Kinkead, Arnold (Department: 2817)

Oscillators

Electromechanical resonator

Crystal

C331S1160FE, C331S1160FE, C331S175000, C331S186000

Reexamination Certificate

active

07030709

ABSTRACT:
There is disclosed an inverter oscillator circuit delivering an alternating output signal and including a parallel arrangement, between an input terminal and output terminal, of an inverter amplifier means, a resonator, and a resistor, first and second load capacitors being respectively connected between said input and output terminals, on the one hand, and a supply potential, on the other hand. Control means for controlling the inverter amplifier means such that it has a so called start-up transconductance value during a start-up phase and a so-called reduced transconductance value, lower than said start-up transconductance value, in steady state at the end of said start-up phase. Means for smoothing an amplitude decrease in the output signal resulting from the passage of said start-up transconductance value to said reduced transconductance value is included.

REFERENCES:
patent: 4360789 (1982-11-01), Lewyn et al.
patent: 5208558 (1993-05-01), Shigehara et al.
patent: 5557243 (1996-09-01), Ho
patent: 5909152 (1999-06-01), Li et al.
patent: 6025757 (2000-02-01), Tsukagoashi et al.
patent: 886372 (1998-12-01), None
patent: 1111770 (1999-12-01), None
patent: 60-64506 (1985-04-01), None

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