CMOS oscillator having bias circuit outside oscillator feedback

Details CMOS oscillator having bias circuit outside oscillator feedback CMOS oscillator having bias circuit outside oscillator feedback

1975-02-26

1976-05-25

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

58 23A, 331108A, 331185, H03B 536

Patent

active

039597440

ABSTRACT:
Disclosed is a highly stable CMOS oscillator for use as the master time reference in a wristwatch. A novel bias circuit comprising a CMOS pair and a relatively large resistor supply a bias voltage to the amplifier of the oscillator. The resistor can be made larger than normal because it is outside the oscillator feedback loop and does not reduce the amplifier open loop gain.

REFERENCES:
patent: 3823546 (1974-07-01), Gortz et al.
patent: 3838566 (1974-10-01), O'Connor et al.

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