A MEMS-Based Power-Scalable Hearing Aid Analog Front End

Deligoz I.; Naqvi S. R.; Copani T.; Kiaei S.; Bakkaloglu B.; Je S.-S.; Chae J.

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A MEMS-Based Power-Scalable Hearing Aid Analog Front End

机译：基于MEMS的功率可扩展助听器模拟前端

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摘要

A dual-channel directional digital hearing aid front end using microelectromechanical-systems microphones, and an adaptive-power analog processing signal chain are presented. The analog front end consists of a double differential amplifier-based capacitance-to-voltage conversion circuit, 40-dB variable gain amplifier (VGA) and a power-scalable continuous time sigma delta analog-to-digital converter (ADC), with 68-dB signal-to-noise ratio dissipating 67 $mu$ W from a 1.2-V supply. The MEMS microphones are fabricated using a standard surface micromachining technology. The VGA and power-scalable ADC are fabricated on a 0.25-$mu$ m complementary metal–oxide semciconductor TSMC process.

机译：提出了使用微机电系统麦克风的双通道定向数字助听器前端，以及自适应功率模拟处理信号链。模拟前端包括一个基于双差分放大器的电容-电压转换电路，40 dB可变增益放大器（VGA）和一个可功率缩放的连续时间sigma delta模数转换器（ADC），具有68 -dB的信噪比从1.2V的电源中耗散了67μW的功率。 MEMS麦克风使用标准的表面微加工技术制造。 VGA和可扩展电源的ADC是在0.25-μm互补金属氧化物半导体TSMC工艺上制造的。

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《Biomedical Circuits and Systems, IEEE Transactions on》 |2011年第3期|p.201-213|共13页
作者
Deligoz I.; Naqvi S. R.; Copani T.; Kiaei S.; Bakkaloglu B.; Je S.-S.; Chae J.;
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作者单位

Electrical, Computer and Energy Engineering, Arizona State University (ASU), USA;

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正文语种 eng
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Continuous time sigma-delta modulation; digital hearing aids; directional microphone array; microelectromechanical-systems (MEMS) microphone;

机译：连续时间sigma-delta调制;数字助听器;定向麦克风阵列;微机电系统（MEMS）麦克风;

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3. A Charge Amplifier Based Complementary Metal–Oxide–Semiconductor Analog Front End for Piezoelectric Microphones in Hearing Aid Devices [J] . Chilukuri Manu, Jung Sungyong, Chung Hoon-Ju Journal of Low Power Electronics . 2019,第3期

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5. Fully Differential Difference Amplifier based Microphone Interface Circuit and an Adaptive Signal to Noise Ratio Analog Front end for Dual Channel Digital Hearing Aids. [D] . Naqvi, Syed Roomi. 2011

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A MEMS-Based Power-Scalable Hearing Aid Analog Front End

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