Patent ID: 8686775

Claim:
A phase interpolator with a phase range of n degrees, where 0<n â‰¦360, and having m reference signals, where mâ‰§2, and a control signal as input, and configured to produce an output signal with a phase within the phase range using one or more of the m reference signals based on a control code provided by the control signal, the phase interpolator comprising one or more circuits configured to: divide the phase range of n degrees into k sections, wherein: k>m; at least two of the k sections exist between any two of the m reference signals; and each section includes a possible output of at least two output signals resulting from respective control codes; and for each of the k sections, select a relative gain of one or more weights assigned to the one or more reference signals, respectively, with respect to the control code provided by the control signal, wherein the relative gain for a given one of the k sections is unequal to relative gains applied to adjacent ones of the k sections.