Current-mode digital-to-analog converter (dac) interface for multi-phase signal generation

An apparatus for phase interpolation, comprising:

• current-mode digital-to-analog converter (DAC) circuitry including at least two in-phase (I) outputs, at least two complementary I (IB) outputs, at least two quadrature (Q) outputs, and at least two complementary Q (QB) outputs;
• and
• a current-mode interpolator including multiple inputs coupled to the at least two I outputs, the at least two IB outputs, the at least two Q outputs, and the at least two QB outputs, respectively, wherein the current-mode interpolator includes split current paths coupled to each of the multiple inputs.

A method for phase interpolation, comprising:

• generating, via digital-to-analog converter (DAC) circuitry, at least two in-phase (I) currents, at least two complementary I (IB) currents, at least two quadrature (Q) currents, and at least two complementary Q (QB) currents;
• and
• split, via an interpolator, each of the at least two I currents, the at least two IB currents, the at least two Q currents, and the at least two QB currents to generate a plurality of phase-shifted currents.