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conference paper
Optimal filtering of incremental first-order sigma-delta modulators with sweep input
2011
Proceedings of 2010 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2010
In this paper, an optimal filter design procedure is described, from the equation representing the behaviour of a ΣΔ modulator to a functional algorithm. The first section shows the design of an optimal filter for a first-order ΣΔ ADC with a constant input. Next, an algorithm for a time-varying input is detailed. The last algorithm allows an optimal decoding of high-resolution ADCs without an SH circuit.