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題名 | A New Microstimulator with Pulse Width Modulation=以脈波寬調變控制之新型微電刺激器 |
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作者姓名(中文) | 鍾文耀; 莊炯承; 廖育良; 張正文; | 書刊名 | Journal of Medical and Biological Engineering |
卷期 | 24:3 2004.09[民93.09] |
頁次 | 頁125-131 |
分類號 | 410.1644 |
關鍵詞 | 微電刺激器; 脈波寬度調變; 互補式金氧半製程; Microstimulator; PWM; CMOS process; |
語文 | 英文(English) |
中文摘要 | 本研究提出一種新型式的植入式微電刺激器系統架構,其中使用脈波寬度調變(PWM)的訊號來驅動輸出電流源,藉以改變輸出刺激電流之脈波寬度,同時再利用改變振盪器頻率來控制刺激電流之頻率,最後刺激電流強度則透過可程式規劃的方式以5位元的數位碼進行規劃。此系統可在2.5V低電壓的環境下正常操作,改良了微電刺激器輸出電流源不適合在低電壓操作之缺點。在電路結構方面,則降低了傳統微電刺激器因採用微控制器為控制單元,而提高電路複雜度之問題。下線後的量測結果印證,本架構具有相當高的可行性。本研究之微電刺激器是以HSPICE進行模擬,並透過國家晶片設計製作中心(CIC),利用台灣積體電路公司(TSMC)所提供之0.35μm 2P4M互補式金氧半製程下線製作。 |
英文摘要 | A novel implantable microstimulator has been designed, fabricated, and characterized. The pulse width modulation (PWM) has been used to control the output current source for changing the duration of output waveform. The frequency of output stimulus current can be controlled by a Schmitt trigger based relaxation oscillator. Finally, the intensity of output stimulus current can be programmed by a 5-bit digital code. This circuitry can operate in only 2.5V low voltage to improve the disadvantage of conventional microstimulator that is not suitable in low voltage. In the architecture of circuitry, it reduces the circuit complexity formed by typical microstimulators adopting mircoprocessors as the control unit. The measured results of the proposed microstimulator chip show that this system is quite feasible for different stimulus modes including regular, random and burst modes. This circuitry has been simulated with HSPICE and fabricated in a 0.35μm 2P4M CMOS process. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。