A Fully Differential Analog Front-End for Signal Processing from EMG Sensor in 28 nm FDSOI Technology
This paper presents a novel analog front-end for EMG sensor signal processing powered by 1 V. Such a low supply voltage requires specific design steps enabled using the 28 nm fully depleted silicon on insulator (FDSOI) technology from STMicroelectronics. An active ground circuit is implemented to ke...
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| Format: | Article |
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MDPI AG
2023-03-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/7/3422 |
| _version_ | 1797607019585208320 |
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| author | Vilem Kledrowetz Roman Prokop Lukas Fujcik Jiri Haze |
| author_facet | Vilem Kledrowetz Roman Prokop Lukas Fujcik Jiri Haze |
| author_sort | Vilem Kledrowetz |
| collection | DOAJ |
| description | This paper presents a novel analog front-end for EMG sensor signal processing powered by 1 V. Such a low supply voltage requires specific design steps enabled using the 28 nm fully depleted silicon on insulator (FDSOI) technology from STMicroelectronics. An active ground circuit is implemented to keep the input common-mode voltage close to the analog ground and to minimize external interference. The amplifier circuit comprises an input instrumentation amplifier (INA) and a programmable-gain amplifier (PGA). Both are implemented in a fully differential topology. The actual performance of the circuit is analyzed using the corner and Monte Carlo analyses that comprise fifth-hundred samples for the global and local process variations. The proposed circuit achieves a high common-mode rejection ratio (<i>CMRR</i>) of 105.5 dB and a high input impedance of 11 G<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="normal">Ω</mi></semantics></math></inline-formula> with a chip area of 0.09 mm<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>2</mn></msup></semantics></math></inline-formula>. |
| first_indexed | 2024-03-11T05:25:24Z |
| format | Article |
| id | doaj.art-0732063b28ac4fd6b3f800e2c84c724f |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T05:25:24Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-0732063b28ac4fd6b3f800e2c84c724f2023-11-17T17:32:18ZengMDPI AGSensors1424-82202023-03-01237342210.3390/s23073422A Fully Differential Analog Front-End for Signal Processing from EMG Sensor in 28 nm FDSOI TechnologyVilem Kledrowetz0Roman Prokop1Lukas Fujcik2Jiri Haze3Department of Microelectronics, Brno University of Technology, Technicka 3058/10, 61600 Brno, Czech RepublicDepartment of Microelectronics, Brno University of Technology, Technicka 3058/10, 61600 Brno, Czech RepublicDepartment of Microelectronics, Brno University of Technology, Technicka 3058/10, 61600 Brno, Czech RepublicDepartment of Microelectronics, Brno University of Technology, Technicka 3058/10, 61600 Brno, Czech RepublicThis paper presents a novel analog front-end for EMG sensor signal processing powered by 1 V. Such a low supply voltage requires specific design steps enabled using the 28 nm fully depleted silicon on insulator (FDSOI) technology from STMicroelectronics. An active ground circuit is implemented to keep the input common-mode voltage close to the analog ground and to minimize external interference. The amplifier circuit comprises an input instrumentation amplifier (INA) and a programmable-gain amplifier (PGA). Both are implemented in a fully differential topology. The actual performance of the circuit is analyzed using the corner and Monte Carlo analyses that comprise fifth-hundred samples for the global and local process variations. The proposed circuit achieves a high common-mode rejection ratio (<i>CMRR</i>) of 105.5 dB and a high input impedance of 11 G<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="normal">Ω</mi></semantics></math></inline-formula> with a chip area of 0.09 mm<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>2</mn></msup></semantics></math></inline-formula>.https://www.mdpi.com/1424-8220/23/7/3422common-mode rejection ratio (<i>CMRR</i>)fully differential difference amplifier (FDDA)driven-right-leg circuitactive ground circuitfully depleted silicon on insulator (FDSOI)electromyography (EMG) |
| spellingShingle | Vilem Kledrowetz Roman Prokop Lukas Fujcik Jiri Haze A Fully Differential Analog Front-End for Signal Processing from EMG Sensor in 28 nm FDSOI Technology Sensors common-mode rejection ratio (<i>CMRR</i>) fully differential difference amplifier (FDDA) driven-right-leg circuit active ground circuit fully depleted silicon on insulator (FDSOI) electromyography (EMG) |
| title | A Fully Differential Analog Front-End for Signal Processing from EMG Sensor in 28 nm FDSOI Technology |
| title_full | A Fully Differential Analog Front-End for Signal Processing from EMG Sensor in 28 nm FDSOI Technology |
| title_fullStr | A Fully Differential Analog Front-End for Signal Processing from EMG Sensor in 28 nm FDSOI Technology |
| title_full_unstemmed | A Fully Differential Analog Front-End for Signal Processing from EMG Sensor in 28 nm FDSOI Technology |
| title_short | A Fully Differential Analog Front-End for Signal Processing from EMG Sensor in 28 nm FDSOI Technology |
| title_sort | fully differential analog front end for signal processing from emg sensor in 28 nm fdsoi technology |
| topic | common-mode rejection ratio (<i>CMRR</i>) fully differential difference amplifier (FDDA) driven-right-leg circuit active ground circuit fully depleted silicon on insulator (FDSOI) electromyography (EMG) |
| url | https://www.mdpi.com/1424-8220/23/7/3422 |
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