Title :
A spur-free MASH digital delta-sigma modulator with higher order shaped dither
Author :
Fitzgibbon, Brian ; Neill, Kieran O. ; Grannell, Andrew ; Horgan, Ciarán ; Zhipeng Ye ; Hosseini, Kaveh ; Kennedy, Michael Peter
Author_Institution :
Univ. Coll. Cork, Cork, Ireland
Abstract :
This paper presents a novel design for a Digital Delta Sigma Modulator (DDSM) which produces a spur-free spectrum for all constant inputs with higher order shaped additive LSB dither. We can increase the order of noise shaping of the applied dither to that of the modulator without any spurious tones appearing in the spectrum. The result is confirmed by simulation.
Keywords :
delta-sigma modulation; DDSM; higher order noise shaped additive LSB dither; spur-free MASH digital delta-sigma modulator; spur-free spectrum; Additive noise; Delta-sigma modulation; Educational institutions; Filters; Frequency; Multi-stage noise shaping; Noise shaping; Quantization; Semiconductor device noise; Stochastic resonance;
Conference_Titel :
Circuit Theory and Design, 2009. ECCTD 2009. European Conference on
Conference_Location :
Antalya
Print_ISBN :
978-1-4244-3896-9
Electronic_ISBN :
978-1-4244-3896-9
DOI :
10.1109/ECCTD.2009.5275074
