| 一种基于前端和后端模块精度优化的助听器系统芯片* |
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| 引用本文： | 李凡阳,江浩. 一种基于前端和后端模块精度优化的助听器系统芯片*[J]. 半导体学报, 2014, 35(3): 035006-9 |
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| 作者姓名： | 李凡阳 江浩 |
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| 基金项目： | Project supported by the National High Technology Research and Development Program of China（No.2008AA010701） |
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| 摘 要： | A hearing aid on-chip system based on accuracy optimized front- and back-end blocks is presented for enhancing the signal processing accuracy of the hearing aid. Compared with the conventional system, the accuracy optimized system is characterized by the dual feedback network and the gain compensation technique used in the front-andback-endblocks,respectively,soastoalleviatethenonlinearitydistortioncausedbytheoutputswing.By usingthetechnique,theaccuracyofthewholehearingaidsystemcanbesignificantlyimproved.Theprototypechip has been designed with a 0.13 m standard CMOS process and tested with 1 V supply voltage. The measurement results show that, for driving a 16 loudspeaker with a normalized output level of 300 mV p-p, the total harmonic distortion reached about60 dB, achieving at least three times reduction compared to the previously reported works. In addition, the typical input referred noise is only about 5 υV rms.
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| 关 键 词： | 芯片上系统 助听器 精度 前端 优化 CMOS工艺 总谐波失真 信号处理 |
A hearing aid on-chip system based on accuracy optimized front- and back-end blocks |
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| Li Fanyang and Jiang Hao. A hearing aid on-chip system based on accuracy optimized front- and back-end blocks[J]. Chinese Journal of Semiconductors, 2014, 35(3): 035006-9 |
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| Authors: | Li Fanyang and Jiang Hao |
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| Affiliation: | Key Laboratory of Microelectronics of Fujian Province, Fuzhou University, Fuzhou 350002, China;Key Laboratory of Microelectronics of Fujian Province, Fuzhou University, Fuzhou 350002, China |
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| Abstract: | front-end back-end pre-amplifier driving amplifier hearing aid |
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| Keywords: | front-end back-end pre-amplifier driving amplifier hearing aid |
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