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Methods and apparatus for maintaining desired slope of clock edges in a phase interpolator using an adjustable bias
Methods and apparatus for maintaining desired slope of clock edges in a phase interpolator using an adjustable bias
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机译:使用可调偏置在相位内插器中保持时钟边沿的所需斜率的方法和装置
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摘要
Methods and apparatus are provided for maintaining a desired slope of clock edges in a phase interpolator using an adjustable bias. The disclosed phase interpolator comprises at least one delay element to generate at least two interpolation signals each having an associated phase and a variable slope unit associated with each of the at least two interpolation signals, wherein a slope of each of the variable slope units is controlled by a bias signal and is varied based on a data rate of the interpolation signals. The slope is varied to maintain a desired slope of clock edges associated with the interpolation signals. The slope can be maintained, for example, between approximately the value of the delay between consecutive clock edges and twice the value of the delay between consecutive clock edges.
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