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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/32498| 標題: | CMOS高效率D類音訊放大器 CMOS Highly-Efficient Class-D Audio Amplifier |
| 作者: | Ming-Jhe Du 杜明哲 |
| 指導教授: | 郭斯彥 |
| 關鍵字: | D類,音訊, CMOS,Class D,Audio, |
| 出版年 : | 2006 |
| 學位: | 碩士 |
| 摘要: | A one-chip integrated circuit of a 2-W class-D audio power amplifier with very high efficiency using a CMOS technology is presented. Compared with traditional class-AB amplifiers that are very poor at efficiency, most below 50%, the proposed class-D amplifier has the efficiency of 90% at the smaller distortion level. The class-D amplifiers generate pulse-width-modulated (PWM) signals by comparing a triangle-wave with input-signals. An output stage with zero dead time and high efficiency is applied to improve the linearity and reduce wasted battery energy. An approach to reducing distortion is applied by using feedback calibration. |
| URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/32498 |
| 全文授權: | 有償授權 |
| 顯示於系所單位： | 電子工程學研究所 |
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| 檔案 | 大小 | 格式 | |
|---|---|---|---|
| ntu-95-1.pdf 未授權公開取用 | 803.77 kB | Adobe PDF |
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