| 摘要 |
A voltage controlled oscillator circuit includes a ring oscillator including a plurality of delay circuits that are connected like a ring and a voltage to current converter circuit for controlling current flowing in the ring oscillator so as to change an oscillation frequency thereof. The voltage to current converter circuit 11 is provided with a shunt circuit for shunting a part of current obtained by converting input voltage, and the shunted part of the current is used for controlling the current flowing in the ring oscillator.
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