A current-steering digital-to-analog converter may include dual current switch modules configured to receive digital input bits representative of desired analog output, and each dual current switch module may be controlled by one of the digital input bits. Each digital input bit may be represented by differential signals. The positive input and the negative input to drive two separate current switches in the dual current switch module may be separated, which may make the switching transition noise generated in the two current switches have a 180 degree phase difference. The output currents of these two current switches may be summed in proper phase to add the in-phase signal currents while canceling out the 180 degree out-of-phase switching noises generated in the two current switches. The 2nd order harmonic distortion and other higher even order harmonic distortions due to the common mode switching noise may be greatly reduced.
