A Low-Power 12-Bit 20 MS/s Asynchronously Controlled SAR ADC for WAVE ITS Sensor Based Applications
A low power 12-bit, 20 MS/s asynchronously controlled successive approximation register (SAR) analog-to-digital converter (ADC) to be used in wireless access for vehicular environment (WAVE) intelligent transportation system (ITS) sensor based application is presented in this paper. To optimize the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/7/2260 |
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| author | Khuram Shehzad Deeksha Verma Danial Khan Qurat Ul Ain Muhammad Basim Sung Jin Kim Behnam Samadpoor Rikan Young Gun Pu Keum Cheol Hwang Youngoo Yang Kang-Yoon Lee |
| author_facet | Khuram Shehzad Deeksha Verma Danial Khan Qurat Ul Ain Muhammad Basim Sung Jin Kim Behnam Samadpoor Rikan Young Gun Pu Keum Cheol Hwang Youngoo Yang Kang-Yoon Lee |
| author_sort | Khuram Shehzad |
| collection | DOAJ |
| description | A low power 12-bit, 20 MS/s asynchronously controlled successive approximation register (SAR) analog-to-digital converter (ADC) to be used in wireless access for vehicular environment (WAVE) intelligent transportation system (ITS) sensor based application is presented in this paper. To optimize the architecture with respect to power consumption and performance, several techniques are proposed. A switching method which employs the common mode charge recovery (CMCR) switching process is presented for capacitive digital-to-analog converter (CDAC) part to lower the switching energy. The switching technique proposed in our work consumes 56.3% less energy in comparison with conventional CMCR switching method. For high speed operation with low power consumption and to overcome the kick back issue in the comparator part, a mutated dynamic-latch comparator with cascode is implemented. In addition, to optimize the flexibility relating to the performance of logic part, an asynchronous topology is employed. The structure is fabricated in 65 nm CMOS process technology with an active area of 0.14 mm<sup>2</sup>. With a sampling frequency of 20 MS/s, the proposed architecture attains signal-to-noise distortion ratio (SNDR) of 65.44 dB at Nyquist frequency while consuming only 472.2 µW with 1 V power supply. |
| first_indexed | 2024-03-10T12:56:49Z |
| format | Article |
| id | doaj.art-1f41177ca4054f658d4706d8a229a514 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T12:56:49Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-1f41177ca4054f658d4706d8a229a5142023-11-21T11:47:05ZengMDPI AGSensors1424-82202021-03-01217226010.3390/s21072260A Low-Power 12-Bit 20 MS/s Asynchronously Controlled SAR ADC for WAVE ITS Sensor Based ApplicationsKhuram Shehzad0Deeksha Verma1Danial Khan2Qurat Ul Ain3Muhammad Basim4Sung Jin Kim5Behnam Samadpoor Rikan6Young Gun Pu7Keum Cheol Hwang8Youngoo Yang9Kang-Yoon Lee10Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, KoreaA low power 12-bit, 20 MS/s asynchronously controlled successive approximation register (SAR) analog-to-digital converter (ADC) to be used in wireless access for vehicular environment (WAVE) intelligent transportation system (ITS) sensor based application is presented in this paper. To optimize the architecture with respect to power consumption and performance, several techniques are proposed. A switching method which employs the common mode charge recovery (CMCR) switching process is presented for capacitive digital-to-analog converter (CDAC) part to lower the switching energy. The switching technique proposed in our work consumes 56.3% less energy in comparison with conventional CMCR switching method. For high speed operation with low power consumption and to overcome the kick back issue in the comparator part, a mutated dynamic-latch comparator with cascode is implemented. In addition, to optimize the flexibility relating to the performance of logic part, an asynchronous topology is employed. The structure is fabricated in 65 nm CMOS process technology with an active area of 0.14 mm<sup>2</sup>. With a sampling frequency of 20 MS/s, the proposed architecture attains signal-to-noise distortion ratio (SNDR) of 65.44 dB at Nyquist frequency while consuming only 472.2 µW with 1 V power supply.https://www.mdpi.com/1424-8220/21/7/2260asynchronous control logicsuccessive approximation register (SAR)wireless access in vehicular environments (WAVE)low power consumptioncapacitive digital to analog converter (CDAC) |
| spellingShingle | Khuram Shehzad Deeksha Verma Danial Khan Qurat Ul Ain Muhammad Basim Sung Jin Kim Behnam Samadpoor Rikan Young Gun Pu Keum Cheol Hwang Youngoo Yang Kang-Yoon Lee A Low-Power 12-Bit 20 MS/s Asynchronously Controlled SAR ADC for WAVE ITS Sensor Based Applications Sensors asynchronous control logic successive approximation register (SAR) wireless access in vehicular environments (WAVE) low power consumption capacitive digital to analog converter (CDAC) |
| title | A Low-Power 12-Bit 20 MS/s Asynchronously Controlled SAR ADC for WAVE ITS Sensor Based Applications |
| title_full | A Low-Power 12-Bit 20 MS/s Asynchronously Controlled SAR ADC for WAVE ITS Sensor Based Applications |
| title_fullStr | A Low-Power 12-Bit 20 MS/s Asynchronously Controlled SAR ADC for WAVE ITS Sensor Based Applications |
| title_full_unstemmed | A Low-Power 12-Bit 20 MS/s Asynchronously Controlled SAR ADC for WAVE ITS Sensor Based Applications |
| title_short | A Low-Power 12-Bit 20 MS/s Asynchronously Controlled SAR ADC for WAVE ITS Sensor Based Applications |
| title_sort | low power 12 bit 20 ms s asynchronously controlled sar adc for wave its sensor based applications |
| topic | asynchronous control logic successive approximation register (SAR) wireless access in vehicular environments (WAVE) low power consumption capacitive digital to analog converter (CDAC) |
| url | https://www.mdpi.com/1424-8220/21/7/2260 |
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