Multiple speed oscillator

Details Multiple speed oscillator Multiple speed oscillator

1989-06-30

1990-10-23

Mis, David

Oscillators

Solid state active element oscillator

Transistors

331108A, 331158, 331179, 330277, H03B 536, H03F 316

Patent

active

049655353

ABSTRACT:
A CMOS oscillator is disclosed using an inverter in which a pair of control terminals are employed to invoke various sized devices which control the flow of current. The inverter gain is determined by the size of the CMOS devices employed. A tuned circuit coupled to the inverter causes it to oscillate at the frequency of parallel resonance. The control terminals are coupled to the inverter invoke transistors that are sized as desired to establish the current flow and gain in the inverter. The current flow is controlled to optimize the gain of the inverter in terms of the frequency of oscillation. A Schmitt trigger can be employed to clean up the oscillator output for digital clock source applications.

REFERENCES:
patent: 4218661 (1980-08-01), Imamura

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