Title :
A multi-bit sigma-delta modulator with interstate feedback
Author :
Fang, L. ; Chao, K.S.
Author_Institution :
Dept. of Electr. Eng., Texas Tech. Univ., Lubbock, TX, USA
Abstract :
A multi-bit sigma-delta modulator with interstage feedback is described. The structure employs a single-bit quantizer in the main sigma-delta modulator and a multi-bit quantizer in the feed-forward path with its error fed back to the main modulator. It combines the advantages of sigma-delta modulator and pipeline A/D converters. This system topology offers an additional noise shaping factor to the error of the multi-bit quantizer
Keywords :
circuit feedback; circuit noise; errors; modulators; sigma-delta modulation; feed-forward path; interstate feedback; multi-bit quantizer; multi-bit sigma-delta modulator; noise shaping factor; single-bit quantizer; Analog-digital conversion; Bandwidth; Delta-sigma modulation; Dynamic range; Feedback; Frequency; Interpolation; Modulation coding; Quantization; Signal resolution;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.704580
