Oversampling Sigma-Delta Modulator Stabilized by Intensive Nonlinear Feedback Loop Technique

摘要：

Based on the former “Local Nonlinear Feedback Loop (LNFL) technique for stabilization of oversampling Sigma-Delta Modulator (SDM), an improved technique called “Intensive Nonlinear Feedback Loop (INFL) is proposed to further raise the stability. The INFL technique not only avoids the instability limitation of high-order SDM without SNR degradation like the former LNFL technique, but also suppresses the output swing range of the critical integrator more effectively than the former LNFL technique. The contribution significantly results from the stabilization scheme closer to the critical integrator. The proposed INFL technique can also be extended to apply to various configurations of SDMs, such as single-loop or multiple-loop structures, for robust-stability and low-power VLSI applications.

作者: Chian C.Ho Chi-Wei Chen

作者单位: Embedded SoC lab, Department of Electrical Engineering, National Yunlin University of Science and Technology Douliou, Yunlin 64002, Taiwan

会议类型: 国际会议

会议名称: 2006 International Conference on Communications,Circuits and Systems(第四届国际通信、电路与系统学术会议)

会议地点: 广西桂林

会议语种:英文

页码: 2342-2345

在线出版日期: 2006-06-25（万方平台首次上网日期，不代表论文的发表时间）