| 摘要 |
An oscillator having a tank circuit (L2, CR1, C2, C3, C4), a transistor amplifier circuit (Q1) and a switching circuit (Q2). The switching circuit (Q2) switches the oscillator between a normal power consumption mode and a lower power consumption mode by switching between two selected voltages at the base of the amplifier transistor (Q1). When in the lower power consumption mode, the oscillator has sufficient current to sustain oscillation, but insufficient current to meet the phase noise requirements for good fidelity and high data rates. When in the normal power consumption mode, the oscillator has sufficient current to meet the phase noise requirements.
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