1. A look-ahead delta-sigma modulator comprising: a digital filter to filter data derived from input signal data and respective elements of delayed output candidate vectors to generate filter output vectors, wherein the digital filter includes state variables that are updated via feedback of a selected output value; a quantization error generator, coupled to the digital filter to receive the filter output vectors, to determine a set of quantization error vectors from each set of M element modulator output candidate vectors and the filter output vectors, wherein M is greater than one and each element in the output candidate vectors is a potential output value of the delta-sigma modulator; and an output generator to select from each set of quantization error vectors a quantization error vector associated with a modulator output candidate vector and to select an output from the associated modulator output candidate vector.