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Technical Examples
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.