论文信息 - Analysis of Harmonic Distortion of Sigma-Delta Modulator

Analysis of Harmonic Distortion of Sigma-Delta Modulator

In this paper, the harmonic distortion of fourth-order sigma-delta modulator is analyzed. Based on the analysis non-ideal models are established and simulation results demonstrated the validity of these models. The non-linear capacitors introduce harmonic distortion and the non-linear on-resistance nearly only introduce second order harmonic distortion. The non-ideal integrators can increase the noise floor of the modulator.The fully-differential topology can be adopted to eliminate even order harmonic distortion and the operational amplifier with high performance can also be used to decrease noise floor of the modulator.

[1] Gabor C. Temes,et al. Analog Circuit Design for ADCs , 1997 .

[2] R. Schreier,et al. Delta-sigma data converters : theory, design, and simulation , 1997 .

[3] Fu-Chuang Chen,et al. Modeling Harmonic Distortions Caused by Nonlinear Op-Amp DC Gain for Switched-Capacitor Sigma–Delta Modulators , 2009, IEEE Transactions on Circuits and Systems II: Express Briefs.

[4] Izzet Kale,et al. Modeling of switched-capacitor delta-sigma Modulators in SIMULINK , 2005, IEEE Transactions on Instrumentation and Measurement.

[5] Gabor C. Temes,et al. Oversampling Delta Sigma Data Converters , 1991 .

[6] Behzad Razavi,et al. Design of Analog CMOS Integrated Circuits , 1999 .

[7] Franco Maloberti,et al. Fundamental limitations of switched-capacitor sigma-delta modulators , 1992 .

[8] G. Temes. Delta-sigma data converters , 1994 .

[9] Willy Sansen,et al. Transient analysis of charge-transfer in SC filters-gain error and distortion , 1987 .

[10] Bruce A. Wooley,et al. A third-order sigma-delta modulator with extended dynamic range , 1994 .

[11] Gabor C. Temes,et al. Oversampling delta-sigma data converters : theory, design, and simulation , 1992 .

[12] Ángel Rodríguez-Vázquez,et al. Top-Down Design of High-Performance Sigma-Delta Modulators , 1998 .