On randomization of digital delta-sigma modulators with DC inputs

Author

Borkowski, Maciej Jan ; Kostamovaara, Juha

Author_Institution

Dept. of Electr. & Inf. Eng., Oulu Univ.

fYear

2006

fDate

21-24 May 2006

Abstract

This study compares a recently proposed deterministic modulator design method to a design based on dithering. The recent method is based on a delta-sigma modulator periodical behavior analysis. Three different dither generators were used in the study: a linear shift register, rectangular and triangular probability density function random number generators. The study shows that the new method gives as good spectrum as resulting from using the best dither generator, while consuming less hardware

Keywords

delta-sigma modulation; quantisation (signal); random number generation; random sequences; shift registers; signal detection; deterministic modulator design method; digital delta-sigma modulators; dither generators; linear shift register; periodical behavior analysis; random number generators; rectangular probability density function; triangular probability density function; Delta modulation; Delta-sigma modulation; Design methodology; Hardware; Laboratories; Noise generators; Probability density function; Quantization; Random number generation; Shift registers;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on

Conference_Location

Island of Kos

Print_ISBN

0-7803-9389-9

Type

conf

DOI

10.1109/ISCAS.2006.1693448

Filename

1693448