Simulation of multi-bit digital delta-sigma modulator

Author

Yang, Wen-Rong ; Cheng, Yuan-Yuan ; Wang, Jiong-ming

Author_Institution

Key Lab. of Adv. Display & Syst. Applic., Shanghai Univ., Shanghai

fYear

2008

fDate

28-31 July 2008

Firstpage

1

Lastpage

3

Abstract

The paper describes a four-order delta-sigma modulation (DSM) with 15 levels quantizer which is used in a 24-bit 44.1-kHz sample-rate audio digital-to-analog converter (DAC). An odd level quantizer has been chosen instead of an even level to reduce quantization noise. The noise transfer function (NTF) is designed to have the zeros optimally in order to increase DR. The peak SNR of the DSM is about 130 dB, which is enough for an audio DAC designed with a 0.35 um CMOS technology.

Keywords

CMOS integrated circuits; audio signal processing; delta-sigma modulation; signal sampling; CMOS technology; four-order delta-sigma modulation; multibit digital delta-sigma modulator; noise transfer function; sample-rate audio digital-to-analog converter; size 0.35 mum; word length 24 bit; CMOS technology; Circuit noise; Delta-sigma modulation; Digital-analog conversion; Filters; Frequency; Noise reduction; Quantization; Signal to noise ratio; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Packaging Technology & High Density Packaging, 2008. ICEPT-HDP 2008. International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-2739-0

Electronic_ISBN

978-1-4244-2740-6

Type

conf

DOI

10.1109/ICEPT.2008.4607001

Filename

4607001