In one aspect, the present invention is directed to a converter for converting a signal from a first format to a second format. The converter includes a decomposition section, a converter array operatively coupled to the decomposition section, and a recombination section operatively coupled to the converter array. The decomposition section includes an input to receive the input signal, a splitter to divide the input signal into a plurality of signals, a plurality of signal outputs, each of which provides as an output one of the plurality of signals, and a clock circuit having a plurality of clock outputs for providing sample clocks to the converter array. The converter array includes a plurality of converters each having a signal input to receive one of the plurality of signals, each having a clock input to receive one of the sample clocks and each having an output that provides a converted signal. At least one of the decomposition section and the recombination section includes filters for filtering one of the plurality of signals and the plurality of converted signals. Other aspects of the invention are directed to methods for generating and calibrating analog and digital converters.