Method and apparatus for phase interpolation

摘要

A phase interpolater circuit includes a first adjustable current supply to generate a first current that is based on the amplitude of a first controlled voltage and a first current mirror circuit to generate a second current that is based on the first current. The phase interpolater circuit further includes a first current steering switch to steer the second current to one of first and second nodes to generate a first voltage transition at one of the first and second nodes, the second current being steered to the first node when a first input signal is in a first state and to the second node when the first input signal is in a second state.