A Continuous Time Sigma-Delta Modulator Using Time-Domain Quantizer and Feedback Element

摘要：

This paper discusses a continuous time sigma-delta modulator architecture that uses efficient timedomain quantizer and corresponding feedback element. The time-domain quantizer takes advantage of all quantization time slots to realize- multi-bit quantization. Thus, the performance is enhanced while the power consumption of the quantizer is reduced. The feedback element generates feedback pulse, and outputs to 1-bit DAC, which is inherently linear. A 20 MHz bandwidth sigma-delta modulator is designed. The evaluation indicates that the 3-order modulator achieves 75.1dB peak SNDR, 81 dB peak SNR and 82 dB DR.

关键词： time-domain continuous time sig-ma-delta modulator

作者: Siliang Hua Hao an an Liu Donghui Wang Chaohuan Hou

作者单位: Digital System Integration Laboratory, Institute of Acoustics, Chinese Academy of Sciences, Beijing Digital System Integration Laboratory, Institute of Acoustics, Chinese Academy of Sciences, Beijing

会议类型: 国际会议

会议名称: 2011 IEEE 9th International Conference on ASIC(2011年第九届IEEE国际专用集成电路大会)

会议地点: 厦门

会议语种:英文

页码: 493-496

在线出版日期: 2011-10-25（万方平台首次上网日期，不代表论文的发表时间）