DocumentCode
1287963
Title
Digital noise shaping multibit delta-sigma modulator
Author
Wang, Q.-Q. ; Ge, B.-J. ; Feng, X.-X. ; Wang, X.-A.
Author_Institution
Shenzhen Grad. Sch., Sch. of Inf. Eng., Peking Univ., Shenzhen, China
Volume
46
Issue
16
fYear
2010
Firstpage
1110
Lastpage
1111
Abstract
A general single-loop multibit delta-sigma modulator is proposed. To reduce the sensitivity of the modulator performance to the nonlinearity of the multibit feedback DAC, a digital loop filter is used to shape the mismatch noise of the DAC. Simulation results show that this modulator not only has good stability but also shapes the quantisation noise and the mismatch noise at the same order.
Keywords
circuit feedback; circuit noise; delta-sigma modulation; digital filters; quantisation (signal); digital loop filter; digital noise shaping; general single-loop multibit delta-sigma modulator; mismatch noise; modulator performance; multibit feedback DAC; quantisation noise; sensitivity;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2010.1598
Filename
5542557
Link To Document