An Ultra Low Power Sigma-Delta Modulator for Hearing Aid with Double-Sampling

摘要：

A single-loop third-order switched-capacitor sigma-Delta modulator for hearing aid application is presented.Double-Sampling is introduced to achieve a high performance with comparative low power consumption. The effect of capacitor mismatch is further discussed. To over come the switch-on problem under low-voltage, bootstrapping is adopted in this design. The modulator is implemented under SMIC0.13/μm mix signal technology, the post simulation results indicates the modulator achieves 92dB SNDR in 8 kHz signal bandwidth with an OSR of 128. The power consumption is 38uW under 1-V supply voltage and the chip core size is 0.25 mm2.

关键词： Double-Sampling Sigma-Delta low-voltage low-power Hearing Aid

作者: Da Qi Yuan-wen Li Long-Cheng Jun Xu Fan Ye Jun-yan Ren

作者单位: State Key Laboratory of ASIC & System,Microelectronic Science and Technology Innovation Platform,Fudan University,Shanghai 201203,China

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: 1141-1144

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）