Maximum Sequence Length MASH Digital Delta–Sigma Modulators
Maximum Sequence Length MASH Digital Delta–Sigma Modulators
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DOI:
10.1109/tcsi.2007.905653
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发表时间:
2007-12
期刊:
影响因子:
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通讯作者:
K. Hosseini;Michael Peter Kennedy
中科院分区:
文献类型:
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作者:
K. Hosseini;Michael Peter Kennedy
This paper presents a modified structure for the first-order digital delta-sigma modulator (DDSM) which yields the maximum sequence length (N) for all constant digital inputs and for all initial conditions. Using this structure, MultistAge noise-SHaping (MASH) DDSMs are developed which, for a constant input, always have a sequence length of Nl regardless of the initial conditions and input value, where N is the sequence length of each stage and l is the number of the first-order stages used in the MASH. The performance is confirmed mathematically, by simulation, and experimentally.