A Linearized Current Stimulator for Deep Brain Stimulation
| Autor: | Yu-Jung Chu, 朱昱融 |
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| Rok vydání: | 2011 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 99 In this thesis, the front end of the stimulator applied in the implantable deep brain stimulation (DBS) for the therapy of Parkinson’s disease is developed. This stimulator adopts the low power switched-capacitor DAC accompanying with voltage-to-current transconductance amplifiers to obtain the adjustable output currents. The proposed distortion cancellation technique improves the linearity of the current stimulator. The biphasic stimulation waveform is generated from the bridge switching technique and the programmable pulse. The digital circuit generates the programmable pulse signals with width and frequency adjustments. This stimulation circuit provides the 0~165uA current for a typical loading of 10 KΩ, 16~128us pulse width, and 126~244 Hz frequencies. The key component, voltage to current transconductance amplifier, of this stimulator is fabricated with a TSMC 0.35-um CMOS technology at 3.3V supply voltage. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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