Title :
A novel implementation of dithered digital delta-sigma modulators via bus-splitting
Author :
Fitzgibbon, Brian ; Kennedy, Michael Peter ; Maloberti, Franco
Author_Institution :
Dept. of Microelectron. Eng., Univ. Coll. Cork, Cork, Ireland
Abstract :
This paper presents a design methodology for dithered bus-splitting Multi stAge noise SHaping (MASH) digital delta-sigma modulators (DDSMs). Rules for selecting the appropriate wordlengths of the constituent DDSMs are derived which ensure that the spectral performance of the bus-splitting architecture is comparable to that of the conventional design but with less hardware. Behavioral simulations are presented which confirm the theoretical predictions.
Keywords :
delta-sigma modulation; MASH-DDSM; behavioral simulations; dithered bus-splitting multistage noise shaping; dithered digital delta-sigma modulators; Delta-sigma modulation; Design methodology; Hardware; Modulation; Multi-stage noise shaping; Noise; Quantization;
Conference_Titel :
Circuits and Systems (ISCAS), 2011 IEEE International Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4244-9473-6
Electronic_ISBN :
0271-4302
DOI :
10.1109/ISCAS.2011.5937825
