A 290-μW 25-kHz Continuous-Time Delta-Sigma Modulator for Acoustic Sensor Networks

摘要：

This paper presents the design of a continuous time delta-sigma (△Σ) modulator for acoustic sensor networks. A feed-forward structure without a summing block is used to reduce the power consumption of the △Σ modulator. A high linearity aetive-RC filter is used to improve the resolution of the △Σ modulator. A low-power,high-resolution fourth-order continuous-time △Σ modulator with 1-bit quantization was developed by using 0.13-μm,1-poly 8-metal CMOS technology,with a core area of 0.58mm2.Simulation results show that the modulator achieved 91.3-dB SNDR (signal-to-noise plus distortion ratio) over a 25-kHz signal bandwidth with an oversarnpling ratio of 64,while dissipating 290 μW of power from a 3.3-V supply.

关键词： Acoustic sensor continuous-time delta-sigma modulator high resolution low power

作者: Youngkil Choi Hyungjoong Kim Hyungdong Roh Jeongjin Roh

作者单位: Department of Electrical Engineering,Hanyang University,Ansan,Korea

会议类型: 国际会议

会议名称: 2009 IEEE 8th International Conference on ASIC(第八届IEEE国际专用集成电路大会)

会议地点: 长沙

会议语种:英文

页码: 447-450

在线出版日期: 2009-10-20（万方平台首次上网日期，不代表论文的发表时间）