A 100dB-SNR Mixed CT/DT Audio-Band Sigma Delta ADC

摘要：

Although audio-band sigma delta ADC has largely been implemented as discrete time circuits, a continuous time approach offers significant advantages for high accuracy low-power applications. A continuous time design allows for relaxed amplifier unity-gain bandwidth and power requirements. It also provides better noise immunity due to their inherent antialiasing properties. This paper introduces a mixed continuous-time/discrete- time, single-loop, fourthorder, 4-bit audio-band sigma delta ADC that combines the benefits of continuous time and discrete time circuits, while mitigating the challenges associated with continuous time design. Measurement results show that the peak SNR of this ADC reaches 100dB and the total power consumption is less than 30mW.

作者: Liu Yan Hua Siliang Wang Donghui Huo Chaohuan

作者单位: Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, P. R. China

会议类型: 国际会议

会议名称: 2010 10th IEEE International Conference on Solid-State and Integrated Circuit Technology(第十届固态和集成电路技术国际会议 ICSICT-2010)

会议地点: 上海

会议语种:英文

页码: 199-201

在线出版日期: 2010-11-01（万方平台首次上网日期，不代表论文的发表时间）