Improved modeling of sigma-delta modulator non-idealities in SIMULINK

被引：14

作者：

Fornasari, A ^{[1
]}

Malcovati, P ^{[1
]}

Maloberti, F ^{[1
]}

机构：

[1] Univ Pavia, Dept Elect Engn, I-27100 Pavia, Italy

来源：

2005 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS), VOLS 1-6, CONFERENCE PROCEEDINGS | 2005年

关键词：

D O I：

10.1109/ISCAS.2005.1466002

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The goal of this paper is to present an extension of the behavioral models, implemented in the Matlab/Simutink (TM) environment, previously presented in [1, 2] and available in [3]. This toolbox allows us to simulate at behavioral level most of the switched-capacitor (SC) sigma-delta (MA) modulator non-idealities, such as sampling jitter, kT/C noise and operational amplifier limitations (finite bandwidth, finite DC gain, slew rate and saturation). Although very effective in simulating wide-band, medium-resolution Sigma Delta converters the lack of a model for flicker noise and multi-bit quantizers makes this toolbox less attractive for simulating narrow band high resolution converters. The proposed extension not only fixes this limitation, but introduces a predictive model of the effect of capacitor mismatch in the internal multi-bit D/A converter.

引用

页码：5982 / 5985

页数：4

共 6 条

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[J]. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-FUNDAMENTAL THEORY AND APPLICATIONS, 2003, 50 (03): : 352 - 364
[4] *MATHW INC, 1997, SIMULINK MATLAB US G
[5] Norsworthy S. R., 1997, IEEE PRESS
[6] Wideband low-distortion delta-sigma ADC topology
Silva, J
Moon, U
Steensgaard, J
Temes, GC
[J]. ELECTRONICS LETTERS, 2001, 37 (12) : 737 - 738

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