Voltage controlled oscillator operable over a large frequency ra

Details Voltage controlled oscillator operable over a large frequency ra Voltage controlled oscillator operable over a large frequency ra

1993-05-18

1994-11-22

Mis, David

Oscillators

Solid state active element oscillator

Transistors

331108C, 331144, 331179, H03K 3282, H03B 524

Patent

active

053672704

ABSTRACT:
A voltage controlled oscillator circuit is shown in integrated circuit chip design form. The frequency range of the circuit is extended by providing switch means for isolating the off-chip frequency determining capacitor and employing a minimum-value on-chip capacitor to control circuit maximum frequency operation. The circuit is based upon a regenerative latch operation which switches a controlled current to charge a capacitor first in one polarity and then in the other polarity. A control voltage determines the charging current and hence the frequency of operation.

REFERENCES:
patent: 5070311 (1991-12-01), Nicolai

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