Title :
Comparative study of the MASH digital delta-sigma modulators
Author :
Xu, Tao ; Condon, Marissa
Author_Institution :
Sch. of Electron. Eng., Dublin City Univ., Dublin, Ireland
Abstract :
The paper focuses on the Multi-stAge noise SHaping (MASH) digital delta-sigma modulator (DDSM) that employs multi-moduli (MM-MASH). Different architectures of the MASH DDSM are compared. In particular, it is proven that a higherorder error feedback modulator (EFM) has the same sequence length as a first-order EFM (EFM1) in an MM-MASH. In addition, the method that is required to setup the quantisation moduli of the MM-MASH is introduced. The theory is validated by simulation.
Keywords :
delta-sigma modulation; MASH DDSM architecture; MASH digital delta-sigma modulators; higher-order error feedback modulator; multimoduli MASH; multistage noise shaping digital delta-sigma modulator; quantisation moduli; sequence length; Consumer electronics; Delta-sigma modulation; Digital audio players; Feedback; Frequency; Hardware; Multi-stage noise shaping; Quantization; Stochastic resonance; Telephony;
Conference_Titel :
Research in Microelectronics and Electronics, 2009. PRIME 2009. Ph.D.
Conference_Location :
Cork
Print_ISBN :
978-1-4244-3733-7
Electronic_ISBN :
978-1-4244-3734-4
DOI :
10.1109/RME.2009.5201293
