Quadrature bandpass (QBP) ΣΔ ADCs require a feedback path for both the I and the Q part of the complex feedback signal. A complex DAC could give this feedback with near-perfect I/Q balance. Still, the mismatch between the unit elements of the complex DAC introduces mismatch noise that should be shaped out of the signal band with dynamic elementmatching (DEM) techniques. To select the unit DAC elements of the complex multibit DAC, the well-known data directed swapper