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EXTENDABLE N-CHANNEL DIGITAL PULSE-WIDTH/PULSE-FREQUENCY MODULATOR
EXTENDABLE N-CHANNEL DIGITAL PULSE-WIDTH/PULSE-FREQUENCY MODULATOR
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机译:可扩展的N通道数字脉冲宽度/脉冲频率调制器
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摘要
A multichannel digital pulse width modulator/digital pulse frequency modulator uses a single ring oscillator that is shared by multiple channels. The ring oscillator has taps that can be used for least significant bit (LSB) precision of the generated PWM signal. The ring oscillator also produces a ring clock that is used to synchronize logic in the channels. Since the logic in the channels are synchronized by the ring clock, the channels can each independently produce different frequency PWM (or PFM) signals and still share the same ring oscillator.
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