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A CMOS MEMS Audio Transducer Implemented by Silicon Condenser Microphone With Analog Front-End Circuits of Audio Codec

机译:由带有音频编解码器模拟前端电路的硅电容麦克风实现的CMOS MEMS音频传感器

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This study proposes a CMOS MEMS audio transducer implemented by combining a silicon condenser microphone with analog front-end audio codec circuits. The proposed CMOS MEMS audio transducer is attractive because the sensor and all the circuits are robustly and compactly integrated. The overall size of the proposed device is much smaller than traditional electrets-condenser microphones (ECMs). Another innovation of the proposed CMOS MEMS audio transducer is that it can operate without any charge pump circuits, which overcomes the problem of requiring a high bias voltage. Measurement results confirm the correct functions and performance of the proposed CMOS MEMS audio transducer. The area of the proposed CMOS MEMS audio transducer is $1352times 1410 mu{hbox {m}}^{2}$ and the FOM of the proposed sigma-delta modulator is 148 dB. The proposed CMOS MEMS audio transducer is suitable for audio devices, such as audio codecs.
机译:这项研究提出了一种CMOS MEMS音频换能器,该换能器通过将硅电容麦克风与模拟前端音频编解码器电路相结合来实现。所提出的CMOS MEMS音频换能器具有吸引力,因为传感器和所有电路均牢固且紧凑地集成在一起。拟议中的设备的总体尺寸比传统的驻极体-电容麦克风(ECM)小得多。所提出的CMOS MEMS音频换能器的另一项创新是它可以在没有任何电荷泵电路的情况下工作,从而克服了需要高偏置电压的问题。测量结果证实了所提出的CMOS MEMS音频换能器的正确功能和性能。拟议的CMOS MEMS音频换能器的面积为$ 1352乘以1410μ{hbox {m}} ^ {2} $,提议的sigma-delta调制器的FOM为148 dB。提出的CMOS MEMS音频换能器适用于音频设备,例如音频编解码器。

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