Comparison of Interface Circuits for Continuous-Time Read-Out from MEMS Microphones

被引：0

作者：

Gaspar, Samuel ^{[1
]}

Mucha, Igor ^{[1
]}

Malcovati, Piero ^{[2
]}

机构：

[1] Invensense Slovakia, Bratislava, Slovakia

[2] Univ Pavia, Dept Elect Comp & Biomed Engn, Pavia, Italy

来源：

2023 18TH CONFERENCE ON PH.D RESEARCH IN MICROELECTRONICS AND ELECTRONICS, PRIME | 2023年

关键词：

D O I：

10.1109/PRIME58259.2023.10161824

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a brief review of continuous-time, low-power integrated CMOS analog front-ends (AFEs) for capacitive transducers, such as MEMS microphones. Source follower (SF), common source (CS), differential amplifier (DA) and differential difference amplifier (DDA) are compared in terms of input-referred noise, current consumption and acoustic overload point. All interface circuits have been theoretically analyzed, designed, and simulated. The SF structure turns out to be the best solution in all aspects. The main limiting factor for the noise performance turns out to be the flicker noise component.

引用

页码：297 / 300

页数：4

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