A Low Noise CMOS Readout Based on a Polymer-Coated SAW Array for Miniature Electronic Nose
An electronic nose (E-Nose) is one of the applications for surface acoustic wave (SAW) sensors. In this paper, we present a low-noise complementary metal–oxide–semiconductor (CMOS) readout application-specific integrated circuit (ASIC) based on an SAW sensor array for achieving a miniature E-Nose. T...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-10-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/16/11/1777 |
| _version_ | 1818001419506024448 |
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| author | Cheng-Chun Wu Szu-Chieh Liu Shih-Wen Chiu Kea-Tiong Tang |
| author_facet | Cheng-Chun Wu Szu-Chieh Liu Shih-Wen Chiu Kea-Tiong Tang |
| author_sort | Cheng-Chun Wu |
| collection | DOAJ |
| description | An electronic nose (E-Nose) is one of the applications for surface acoustic wave (SAW) sensors. In this paper, we present a low-noise complementary metal–oxide–semiconductor (CMOS) readout application-specific integrated circuit (ASIC) based on an SAW sensor array for achieving a miniature E-Nose. The center frequency of the SAW sensors was measured to be approximately 114 MHz. Because of interference between the sensors, we designed a low-noise CMOS frequency readout circuit to enable the SAW sensor to obtain frequency variation. The proposed circuit was fabricated in Taiwan Semiconductor Manufacturing Company (TSMC) 0.18 μm 1P6M CMOS process technology. The total chip size was nearly 1203 × 1203 μm2. The chip was operated at a supply voltage of 1 V for a digital circuit and 1.8 V for an analog circuit. The least measurable difference between frequencies was 4 Hz. The detection limit of the system, when estimated using methanol and ethanol, was 0.1 ppm. Their linearity was in the range of 0.1 to 26,000 ppm. The power consumption levels of the analog and digital circuits were 1.742 mW and 761 μW, respectively. |
| first_indexed | 2024-04-14T03:34:06Z |
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| id | doaj.art-b9a735aff5f1425dbcb07561b80518fc |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-14T03:34:06Z |
| publishDate | 2016-10-01 |
| publisher | MDPI AG |
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| series | Sensors |
| spelling | doaj.art-b9a735aff5f1425dbcb07561b80518fc2022-12-22T02:14:51ZengMDPI AGSensors1424-82202016-10-011611177710.3390/s16111777s16111777A Low Noise CMOS Readout Based on a Polymer-Coated SAW Array for Miniature Electronic NoseCheng-Chun Wu0Szu-Chieh Liu1Shih-Wen Chiu2Kea-Tiong Tang3Department of Electrical Engineering, National Tsing Hua University/No. 101, Sec. 2, Kuang-Fu Road, Hsinchu 30013, TaiwanDepartment of Electrical Engineering, National Tsing Hua University/No. 101, Sec. 2, Kuang-Fu Road, Hsinchu 30013, TaiwanDepartment of Electrical Engineering, National Tsing Hua University/No. 101, Sec. 2, Kuang-Fu Road, Hsinchu 30013, TaiwanDepartment of Electrical Engineering, National Tsing Hua University/No. 101, Sec. 2, Kuang-Fu Road, Hsinchu 30013, TaiwanAn electronic nose (E-Nose) is one of the applications for surface acoustic wave (SAW) sensors. In this paper, we present a low-noise complementary metal–oxide–semiconductor (CMOS) readout application-specific integrated circuit (ASIC) based on an SAW sensor array for achieving a miniature E-Nose. The center frequency of the SAW sensors was measured to be approximately 114 MHz. Because of interference between the sensors, we designed a low-noise CMOS frequency readout circuit to enable the SAW sensor to obtain frequency variation. The proposed circuit was fabricated in Taiwan Semiconductor Manufacturing Company (TSMC) 0.18 μm 1P6M CMOS process technology. The total chip size was nearly 1203 × 1203 μm2. The chip was operated at a supply voltage of 1 V for a digital circuit and 1.8 V for an analog circuit. The least measurable difference between frequencies was 4 Hz. The detection limit of the system, when estimated using methanol and ethanol, was 0.1 ppm. Their linearity was in the range of 0.1 to 26,000 ppm. The power consumption levels of the analog and digital circuits were 1.742 mW and 761 μW, respectively.http://www.mdpi.com/1424-8220/16/11/1777low noiselow powerminiature electronic nosesurface acoustic wave sensor array |
| spellingShingle | Cheng-Chun Wu Szu-Chieh Liu Shih-Wen Chiu Kea-Tiong Tang A Low Noise CMOS Readout Based on a Polymer-Coated SAW Array for Miniature Electronic Nose Sensors low noise low power miniature electronic nose surface acoustic wave sensor array |
| title | A Low Noise CMOS Readout Based on a Polymer-Coated SAW Array for Miniature Electronic Nose |
| title_full | A Low Noise CMOS Readout Based on a Polymer-Coated SAW Array for Miniature Electronic Nose |
| title_fullStr | A Low Noise CMOS Readout Based on a Polymer-Coated SAW Array for Miniature Electronic Nose |
| title_full_unstemmed | A Low Noise CMOS Readout Based on a Polymer-Coated SAW Array for Miniature Electronic Nose |
| title_short | A Low Noise CMOS Readout Based on a Polymer-Coated SAW Array for Miniature Electronic Nose |
| title_sort | low noise cmos readout based on a polymer coated saw array for miniature electronic nose |
| topic | low noise low power miniature electronic nose surface acoustic wave sensor array |
| url | http://www.mdpi.com/1424-8220/16/11/1777 |
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