A 100 KS/s 8–10-Bit Resolution-Reconfigurable SAR ADC for Biosensor Applications
A DAC switching scheme that combines energy efficiency and resolution reconfigurability is proposed. Compared with the conventional switching scheme, the proposed scheme achieves 93.8%, 96.1%, and 97.3% switching energy saving in 8-bit, 9-bit, and 10-bit modes, respectively. Based on the proposed sw...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/13/11/1909 |
| _version_ | 1797467182970437632 |
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| author | Yunfeng Hu Lexing Hu Bin Tang Bin Li Zhaohui Wu Xiaojia Liu |
| author_facet | Yunfeng Hu Lexing Hu Bin Tang Bin Li Zhaohui Wu Xiaojia Liu |
| author_sort | Yunfeng Hu |
| collection | DOAJ |
| description | A DAC switching scheme that combines energy efficiency and resolution reconfigurability is proposed. Compared with the conventional switching scheme, the proposed scheme achieves 93.8%, 96.1%, and 97.3% switching energy saving in 8-bit, 9-bit, and 10-bit modes, respectively. Based on the proposed switching scheme, an 8–10-bit resolution-reconfigurable SAR ADC for biosensor applications is designed. The ADC consists of resolution-reconfigurable binary-weighted capacitive DAC, a two-stage full dynamic comparator, sampling switch, and the resolution-control SAR logic. Simulated in 180 nm CMOS process and 100 kS/s sampling rate, the ADC achieves the 46.80/53.89/60.14 dB signal-to-noise and distortion ratio (SNDR), the 55.22/62.51/73.09 dB spurious-free dynamic range (SFDR) and the 0.81/0.91/1.01 μW power consumption in 8/9/10-bit mode, respectively. |
| first_indexed | 2024-03-09T18:50:01Z |
| format | Article |
| id | doaj.art-7ce74fffc40346fbb50060769eae9325 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-09T18:50:01Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-7ce74fffc40346fbb50060769eae93252023-11-24T05:55:08ZengMDPI AGMicromachines2072-666X2022-11-011311190910.3390/mi13111909A 100 KS/s 8–10-Bit Resolution-Reconfigurable SAR ADC for Biosensor ApplicationsYunfeng Hu0Lexing Hu1Bin Tang2Bin Li3Zhaohui Wu4Xiaojia Liu5University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, ChinaUniversity of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, ChinaUniversity of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, ChinaSchool of Microelectronics, South China University of Technology, Guangzhou 510640, ChinaSchool of Microelectronics, South China University of Technology, Guangzhou 510640, ChinaUniversity of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, ChinaA DAC switching scheme that combines energy efficiency and resolution reconfigurability is proposed. Compared with the conventional switching scheme, the proposed scheme achieves 93.8%, 96.1%, and 97.3% switching energy saving in 8-bit, 9-bit, and 10-bit modes, respectively. Based on the proposed switching scheme, an 8–10-bit resolution-reconfigurable SAR ADC for biosensor applications is designed. The ADC consists of resolution-reconfigurable binary-weighted capacitive DAC, a two-stage full dynamic comparator, sampling switch, and the resolution-control SAR logic. Simulated in 180 nm CMOS process and 100 kS/s sampling rate, the ADC achieves the 46.80/53.89/60.14 dB signal-to-noise and distortion ratio (SNDR), the 55.22/62.51/73.09 dB spurious-free dynamic range (SFDR) and the 0.81/0.91/1.01 μW power consumption in 8/9/10-bit mode, respectively.https://www.mdpi.com/2072-666X/13/11/1909SAR ADCresolution-reconfigurableswitching scheme |
| spellingShingle | Yunfeng Hu Lexing Hu Bin Tang Bin Li Zhaohui Wu Xiaojia Liu A 100 KS/s 8–10-Bit Resolution-Reconfigurable SAR ADC for Biosensor Applications Micromachines SAR ADC resolution-reconfigurable switching scheme |
| title | A 100 KS/s 8–10-Bit Resolution-Reconfigurable SAR ADC for Biosensor Applications |
| title_full | A 100 KS/s 8–10-Bit Resolution-Reconfigurable SAR ADC for Biosensor Applications |
| title_fullStr | A 100 KS/s 8–10-Bit Resolution-Reconfigurable SAR ADC for Biosensor Applications |
| title_full_unstemmed | A 100 KS/s 8–10-Bit Resolution-Reconfigurable SAR ADC for Biosensor Applications |
| title_short | A 100 KS/s 8–10-Bit Resolution-Reconfigurable SAR ADC for Biosensor Applications |
| title_sort | 100 ks s 8 10 bit resolution reconfigurable sar adc for biosensor applications |
| topic | SAR ADC resolution-reconfigurable switching scheme |
| url | https://www.mdpi.com/2072-666X/13/11/1909 |
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