Gain mismatch effect of cascaded sigma delta modulator reduced by serial technique

Author

Ho, Chian C. ; Kuo, Chung J.

Author_Institution

Dept. of Electr. Eng., Nat. Chung Cheng Univ., Chiayi, Taiwan

Volume

2

fYear

1999

fDate

36342

Firstpage

9

Abstract

Based on the MASH (multistage noise shaping) architecture, an improved architecture-uni-MASH which employs the time-division concept for architecture and circuit reuse is proposed. Uni-MASH retains robust stability and high-ordered noise shaping factor of MASH´s virtues. Besides, the following additional advantages of uni-MASH are verified by computer simulation: (1) Uni-MASH has smaller chip area than MASH. (2) Uni-MASH reduces the gain mismatch effects between each SDM stage

Keywords

VLSI; cascade networks; circuit stability; monolithic integrated circuits; sigma-delta modulation; MASH architecture modification; cascaded sigma delta modulator; chip area reduction; circuit reuse; gain mismatch effect reduction; high-ordered noise shaping factor; multistage noise shaping architecture; robust stability; serial technique; time-division concept; uni-MASH architecture; Circuits; Computer architecture; Delta modulation; Delta-sigma modulation; Multi-stage noise shaping; Noise cancellation; Noise shaping; Quantization; Switches; Very large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on

Conference_Location

Orlando, FL

Print_ISBN

0-7803-5471-0

Type

conf

DOI

10.1109/ISCAS.1999.780473

Filename

780473