A cascaded integrator comb filter includes a first integrator that receives an input signal x[n] and provides an integrated signal, and a fractional integrator that also receives the input signal x[n] and provides a fractional integrated signal. A summer sums the integrated signal and the fractional integrated signal and provides a summed signal indicative thereof to a second integrator, which receives and integrates the summed signal to provide a second integrator output signal. A decimator unit receives the second integrator output signal and provides a decimated signal to a differentiator that receives the decimated signal and provides a differentiated signal.