Title :
Modeling non-idealities of Sigma Delta ADC in simulink
Author :
Lei Jian-ming ; Dai Xiao-wu ; Zou Xue-Cheng ; Zou Zhi-ge
Author_Institution :
Dept. of Electron. of Sci. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan
Abstract :
Non-ideal behavior models of switched capacitor sigma delta ADC are presented. The modulator non-idealities such as operational amplifier parameters (GBW, colored noise, SR, saturation voltage and so on), clock jitter, capacitor mismatch, nonlinear switch on-resistance and are included. The operational amplifier nonlinear DC Gain is modeled with emphasis and simulation results show it introduces odd harmonic distortion.
Keywords :
analogue-digital conversion; harmonic distortion; operational amplifiers; capacitor mismatch; clock jitter; harmonic distortion; nonlinear switch on-resistance; operational amplifier parameters; sigma delta ADC; simulink; Capacitors; Clocks; Colored noise; Delta-sigma modulation; Harmonic distortion; Jitter; Operational amplifiers; Strontium; Switches; Voltage;
Conference_Titel :
Communications, Circuits and Systems, 2008. ICCCAS 2008. International Conference on
Conference_Location :
Fujian
Print_ISBN :
978-1-4244-2063-6
Electronic_ISBN :
978-1-4244-2064-3
DOI :
10.1109/ICCCAS.2008.4657946
