CMOS crystal controlled oscillator

Details CMOS crystal controlled oscillator CMOS crystal controlled oscillator

1985-12-11

1987-02-03

LaRoche, Eugene R.

Oscillators

Solid state active element oscillator

Transistors

331160, 368159, H03B 530

Patent

active

046411097

ABSTRACT:
A CMOS crystal controlled oscillator includes a CMOS inverter composed of series connected MOS FETs and a crystal connected between signal input an output nodes of the inverter. First and second capacitors are respectively connected between the signal input and output nodes of the inverter and a feedback resistor is connected between the signal input and output nodes of the inverter. A first current limiting circuit is connected between a MOS FET of the inverter and a power source potential and a second limiting circuit is connected between another MOS FET of the inverter and a ground potential. A control register is provided for controlling the first and second current limiting circuits based on data contained within an internal data bus.

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