透過您的圖書館登入
IP:18.222.175.173
  • 學位論文

微型麥克風讀出電路之設計

Design of the Microphone Readout Circuit

指導教授 : 鍾文耀

摘要


摘 要 台灣約有十萬人有聽力上的障礙,由於半導體技術及微機電技術之進步,矽晶麥克風與讀出電路已可成熟地製作於同一晶片上,最典型之應用為助聽器輔具、多媒體電腦或手機等產品。因此,發展低功率微型麥克風讀出電路日趨重要。 本文針對商用電容式矽晶麥克風,設計及實現一訊號讀出放大電路系統,整體設計流程從原理了解與文獻參考比較、電路設計、軟體模擬修正、晶片設計、實體佈局與下線及晶片量測結果,在本論文中均有詳述。 在系統效能方面,實驗結果顯示此一訊號讀出放大電路,使用台灣積體電路公司0.35慆 CMOS製程完成晶片設計製作。輸出電壓範圍大約在正負電壓源範圍,功率消耗約0.7mW,而驅動電流達212uA。讀出電路之放大倍率於50-120dB、20Hz至20kHz之不同音波頻率範圍均可正常操作,可涵蓋輕、中、重度聽障患者之聽力損失。

並列摘要


Hearing loss affects 100 thousands of people in the Taiwan. The MEMS is a popular technology allowing the integration of silicon microphone and its interface electronics, such as hearing aid device. Thus, to implement a low power microphone readout circuit is an important work. In this study, a readout amplifier system design for capacitive silicon microphone applications was presented. The readout amplifier system was fabricated in a 0.35慆 CMOS technology. The operational amplifier in microphone readout circuit provides rail-to-rail output swing. The maximum supply current is 212 嫀 with 0.7mW power dissipation. Experiment results show that the proposed system has an operating response between 20Hz to 20 kHz sound wave, 50-120dB voltage gain range. The measured results proved to be suitable for use in different class of hearing loss.

參考文獻


[21] 郭蔡增,”電流式葡萄糖感測器之讀出電路設計”,中原大學電子工程學系; 碩士論文;2006
[3] Minhang Bao, Weiyuan Wang, “Future of micro-electro-mechanical- systems(MEMS)”, Sensors and Actuators, A 56, pp. 135-141, 1996.
[5] P. R. Scheeper, A.G. H. van der Donk, W. Olthuis, and P. Bergveld, “Fabrication of silicon condenser microphone using single wafer technology”, J. Microelectromech. Syst. Vol. 1, no. 3, 1992.
[6] M. Royer, J. Holmen, M. Wurm, and O. Aadland, "ZnO on Si. Integrated Acoustic Sensor". Sensors and Actuators, A: Physical,. 1983. 4: p. 357-62.
[7] Schellin, R. and Hess, G., “A Silicon Subminiature. Microphone Based on Piezoresistive Polysilicon Strain Gauges Sensors Actuators A,32,pp. 555-559, 1992

被引用紀錄


李麗芬(2012)。運用未來教室對國小二年級數學乘法教學之研究〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-1107201217182800

延伸閱讀