CMOS oscillator

Oscillators – Solid state active element oscillator – Transistors

Patent

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Details

307313, H03B 536

Patent

active

039654427

ABSTRACT:
An oscillator which includes a complementary symmetry metal oxide semiconductor (CMOS) inverter, a crystal connected between the input and output terminals of the inverter, and input and output capacitors connected to these input and output terminals, respectively. Low power dissipation is achieved by making the input capacitance of much higher value than the output capacitance. Frequency stability is obtained by incorporating a voltage controlled capacitor in the circuit which, in response to a change in operating voltage, changes value in a sense to compensate for the tendency of the oscillator frequency to change.

REFERENCES:
patent: 3803828 (1974-04-01), Keeler et al.
patent: 3838566 (1974-10-01), O'Connor

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