An ultra-low voltage 40nm CMOS current reference with low temperature coefficient
This dissertation presents a low-power and low-voltage subthreshold current reference without the use of bandgap reference topology and amplifier. Implemented in TSMC40nm process technology, the proposed topology works stably at 0.65V supply, outputting a low T.C. current reference. The circuit empl...
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| Other Authors: | |
| Format: | Thesis-Master by Coursework |
| Language: | English |
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Nanyang Technological University
2025
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| Online Access: | https://hdl.handle.net/10356/182765 |
| _version_ | 1826115044909252608 |
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| author | Hong, Jiayi |
| author2 | Chan Pak Kwong |
| author_facet | Chan Pak Kwong Hong, Jiayi |
| author_sort | Hong, Jiayi |
| collection | NTU |
| description | This dissertation presents a low-power and low-voltage subthreshold current reference without the use of bandgap reference topology and amplifier. Implemented in TSMC40nm process technology, the proposed topology works stably at 0.65V supply, outputting a low T.C. current reference. The circuit employs piecewise temperature compensation to achieve lower temperature coefficient. A low temperature coefficient of 21.58 ppm/℃ at tt corner can be obtained. For Monte-Carlo simulation of 100 samples, the mean T.C. is 39.55 ppm/℃ and the process sensitivity is 8.3% for the range of -20-80℃. This shows good immunity against process variation. Besides, the topology exhibits low power consumption of only 91nW. Finally, the line sensitivity is acceptable and the FOM is reasonable when compared with other reported works. In general, with its low supply voltage, low power and low T.C., the proposed work is suitable for portable or implantable medical applications with strict requirement and IoT circuits and systems. |
| first_indexed | 2025-03-09T11:16:57Z |
| format | Thesis-Master by Coursework |
| id | ntu-10356/182765 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-03-09T11:16:57Z |
| publishDate | 2025 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1827652025-02-28T15:48:40Z An ultra-low voltage 40nm CMOS current reference with low temperature coefficient Hong, Jiayi Chan Pak Kwong School of Electrical and Electronic Engineering epkchan@ntu.edu.sg Engineering Current reference Low voltage This dissertation presents a low-power and low-voltage subthreshold current reference without the use of bandgap reference topology and amplifier. Implemented in TSMC40nm process technology, the proposed topology works stably at 0.65V supply, outputting a low T.C. current reference. The circuit employs piecewise temperature compensation to achieve lower temperature coefficient. A low temperature coefficient of 21.58 ppm/℃ at tt corner can be obtained. For Monte-Carlo simulation of 100 samples, the mean T.C. is 39.55 ppm/℃ and the process sensitivity is 8.3% for the range of -20-80℃. This shows good immunity against process variation. Besides, the topology exhibits low power consumption of only 91nW. Finally, the line sensitivity is acceptable and the FOM is reasonable when compared with other reported works. In general, with its low supply voltage, low power and low T.C., the proposed work is suitable for portable or implantable medical applications with strict requirement and IoT circuits and systems. Master's degree 2025-02-24T09:21:07Z 2025-02-24T09:21:07Z 2024 Thesis-Master by Coursework Hong, J. (2024). An ultra-low voltage 40nm CMOS current reference with low temperature coefficient. Master's thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/182765 https://hdl.handle.net/10356/182765 en application/pdf Nanyang Technological University |
| spellingShingle | Engineering Current reference Low voltage Hong, Jiayi An ultra-low voltage 40nm CMOS current reference with low temperature coefficient |
| title | An ultra-low voltage 40nm CMOS current reference with low temperature coefficient |
| title_full | An ultra-low voltage 40nm CMOS current reference with low temperature coefficient |
| title_fullStr | An ultra-low voltage 40nm CMOS current reference with low temperature coefficient |
| title_full_unstemmed | An ultra-low voltage 40nm CMOS current reference with low temperature coefficient |
| title_short | An ultra-low voltage 40nm CMOS current reference with low temperature coefficient |
| title_sort | ultra low voltage 40nm cmos current reference with low temperature coefficient |
| topic | Engineering Current reference Low voltage |
| url | https://hdl.handle.net/10356/182765 |
| work_keys_str_mv | AT hongjiayi anultralowvoltage40nmcmoscurrentreferencewithlowtemperaturecoefficient AT hongjiayi ultralowvoltage40nmcmoscurrentreferencewithlowtemperaturecoefficient |