| 摘要 |
A ring oscillator buffer stage, supplied by an adjustable current source of an asymmetrical current controlled ring oscillator, is provided for amplifying the output of the ring oscillator. The frequency of the ring oscillator varies as a function of a control signal. The buffer stage includes; a plurality of current controlled buffers, supplied by currents which are controlled in correspondence with the control signal, for amplifying the output of the oscillator; and a buffer for amplifying the output of the current controlled buffers for providing a full-swing output signal with a duty cycle of approximately 50%.
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