Design methodology for a maximum sequence length MASH digital delta-sigma modulator

摘要

The paper proposes a novel structure for a MASH digital delta-sigma modulator (DDSM) in order to achieve a long sequence length. The expression for the sequence length is derived. The condition to produce the maximum sequence length is also stated. It is proved that the modulator output onlyuddepends on the structure of the first-order error feedbackudmodulator (EFM1) which is the first stage of a Multi-stAge noise SHaping (MASH) modulator.