A Chopper Stabilization Audio Instrumentation Amplifier for IoT Applications
A low-noise instrumentation amplifier dedicated to a nano- and micro-electro-mechanical system (M&NEMS) microphone for the use in Internet of Things (IoT) applications is presented. The piezoresistive sensor and the electronic interface are respectively, silicon nanowires and an instrumentation...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | Journal of Low Power Electronics and Applications |
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| Online Access: | https://www.mdpi.com/2079-9268/10/2/13 |
| _version_ | 1797570567281311744 |
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| author | Jamel Nebhen Pietro M. Ferreira Sofiene Mansouri |
| author_facet | Jamel Nebhen Pietro M. Ferreira Sofiene Mansouri |
| author_sort | Jamel Nebhen |
| collection | DOAJ |
| description | A low-noise instrumentation amplifier dedicated to a nano- and micro-electro-mechanical system (M&NEMS) microphone for the use in Internet of Things (IoT) applications is presented. The piezoresistive sensor and the electronic interface are respectively, silicon nanowires and an instrumentation amplifier. To design an instrumentation amplifier for IoT applications, different trade-offs are discussed like power consumption, gain, noise and sensitivity. Because the most critical noisy block is the amplifier, a delay-time chopper stabilization (CHS) technique is implemented around it to eliminate its offset and 1/<i>f</i> noise. The low-noise instrumentation amplifier is implemented in a 65-nm CMOS (Complementary metal–oxide–semiconductor) technology. The supply voltage is 2.5 V while the power consumption is 0.4 mW and the core area is 1 mm<sup>2</sup>. The circuit of the M&NEMS microphone and the amplifier was fabricated and measured. From measurement results over a signal bandwidth of 20 kHz, it achieves a signal-to-noise ratio (SNR) of 77 dB. |
| first_indexed | 2024-03-10T20:26:21Z |
| format | Article |
| id | doaj.art-a3925b4512674c0abc19d7e4ea8e3b83 |
| institution | Directory Open Access Journal |
| issn | 2079-9268 |
| language | English |
| last_indexed | 2024-03-10T20:26:21Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Low Power Electronics and Applications |
| spelling | doaj.art-a3925b4512674c0abc19d7e4ea8e3b832023-11-19T21:46:14ZengMDPI AGJournal of Low Power Electronics and Applications2079-92682020-04-011021310.3390/jlpea10020013A Chopper Stabilization Audio Instrumentation Amplifier for IoT ApplicationsJamel Nebhen0Pietro M. Ferreira1Sofiene Mansouri2College of Computer Engineering and Sciences, Prince Sattam bin Abdulaziz University, P.O. Box 151, Alkharj 11942, Saudi ArabiaLab. de Génie Electrique et Electronique de Paris, Paris-Saclay, CentraleSupélec, CNRS, 91192 Gif-sur-Yvette, FranceCollege of Computer Engineering and Sciences, Prince Sattam bin Abdulaziz University, P.O. Box 151, Alkharj 11942, Saudi ArabiaA low-noise instrumentation amplifier dedicated to a nano- and micro-electro-mechanical system (M&NEMS) microphone for the use in Internet of Things (IoT) applications is presented. The piezoresistive sensor and the electronic interface are respectively, silicon nanowires and an instrumentation amplifier. To design an instrumentation amplifier for IoT applications, different trade-offs are discussed like power consumption, gain, noise and sensitivity. Because the most critical noisy block is the amplifier, a delay-time chopper stabilization (CHS) technique is implemented around it to eliminate its offset and 1/<i>f</i> noise. The low-noise instrumentation amplifier is implemented in a 65-nm CMOS (Complementary metal–oxide–semiconductor) technology. The supply voltage is 2.5 V while the power consumption is 0.4 mW and the core area is 1 mm<sup>2</sup>. The circuit of the M&NEMS microphone and the amplifier was fabricated and measured. From measurement results over a signal bandwidth of 20 kHz, it achieves a signal-to-noise ratio (SNR) of 77 dB.https://www.mdpi.com/2079-9268/10/2/13M&NEM microphoneinstrumentation amplifiersilicon nanowirelow-noiseIoT |
| spellingShingle | Jamel Nebhen Pietro M. Ferreira Sofiene Mansouri A Chopper Stabilization Audio Instrumentation Amplifier for IoT Applications Journal of Low Power Electronics and Applications M& NEM microphone instrumentation amplifier silicon nanowire low-noise IoT |
| title | A Chopper Stabilization Audio Instrumentation Amplifier for IoT Applications |
| title_full | A Chopper Stabilization Audio Instrumentation Amplifier for IoT Applications |
| title_fullStr | A Chopper Stabilization Audio Instrumentation Amplifier for IoT Applications |
| title_full_unstemmed | A Chopper Stabilization Audio Instrumentation Amplifier for IoT Applications |
| title_short | A Chopper Stabilization Audio Instrumentation Amplifier for IoT Applications |
| title_sort | chopper stabilization audio instrumentation amplifier for iot applications |
| topic | M& NEM microphone instrumentation amplifier silicon nanowire low-noise IoT |
| url | https://www.mdpi.com/2079-9268/10/2/13 |
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