Title :
High Signal-to-Noise Ratio second-order Delta-Sigma modulator
Author :
Gao Hai-Xia ; Xu Yue ; Yang Yin-Tang
Author_Institution :
Sch. of Microelectron., Xidian Univ., Xi´an, China
Abstract :
This paper presents a high Signal-to-Noise Ratio (SNR) second-order Delta-Sigma modulator in which the delay accumulator in traditional structure is replaced by Al-Alaoui integrator. The SNR expression of new structure is obtained through frequency domain analysis on noise transfer function. The experimental results reveal that its performance overcomes that of conventional one with lower quantization noise and 6.5% higher SNR.
Keywords :
delta-sigma modulation; frequency-domain analysis; integrating circuits; secondary cells; transfer functions; Al-Alaoui integrator; delay accumulator; frequency domain analysis; noise transfer function; signal-to-noise ratio second-order delta-sigma modulator; Al-Alaoui integrator; Delta-Sigma modulator; SNR; quantization noise;
Conference_Titel :
Advanced Computer Theory and Engineering (ICACTE), 2010 3rd International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-6539-2
DOI :
10.1109/ICACTE.2010.5579572
