A New Digital to Analog Converter Based on Low-Offset Bandgap Reference
This paper presents a new 12-bit digital to analog converter (DAC) circuit based on a low-offset bandgap reference (BGR) circuit with two cascade transistor structure and two self-contained feedback low-offset operational amplifiers to reduce the effects of offset operational amplifier voltage effec...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2017-01-01
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| Series: | Journal of Electrical and Computer Engineering |
| Online Access: | http://dx.doi.org/10.1155/2017/1658695 |
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| _version_ | 1832550508182634496 |
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| author | Jinpeng Qiu Tong Liu Xubin Chen Yongheng Shang Jiongjiong Mo Zhiyu Wang Hua Chen Jiarui Liu Jingjing Lv Faxin Yu |
| author_facet | Jinpeng Qiu Tong Liu Xubin Chen Yongheng Shang Jiongjiong Mo Zhiyu Wang Hua Chen Jiarui Liu Jingjing Lv Faxin Yu |
| author_sort | Jinpeng Qiu |
| collection | DOAJ |
| description | This paper presents a new 12-bit digital to analog converter (DAC) circuit based on a low-offset bandgap reference (BGR) circuit with two cascade transistor structure and two self-contained feedback low-offset operational amplifiers to reduce the effects of offset operational amplifier voltage effect on the reference voltage, PMOS current-mirror mismatch, and its channel modulation. A Start-Up circuit with self-bias current architecture and multipoint voltage monitoring is employed to keep the BGR circuit working properly. Finally, a dual-resistor ladder DAC-Core circuit is used to generate an accuracy DAC output signal to the buffer operational amplifier. The proposed circuit was fabricated in CSMC 0.5 μm 5 V 1P4M process. The measured differential nonlinearity (DNL) of the output voltages is less than 0.45 LSB and integral nonlinearity (INL) less than 1.5 LSB at room temperature, consuming only 3.5 mW from a 5 V supply voltage. The DNL and INL at −55°C and 125°C are presented as well together with the discussion of possibility of improving the DNL and INL accuracy in future design. |
| format | Article |
| id | doaj-art-a00a4bc95976459a89391e6ee373be8d |
| institution | Kabale University |
| issn | 2090-0147 2090-0155 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Electrical and Computer Engineering |
| spelling | doaj-art-a00a4bc95976459a89391e6ee373be8d2025-02-03T06:06:42ZengWileyJournal of Electrical and Computer Engineering2090-01472090-01552017-01-01201710.1155/2017/16586951658695A New Digital to Analog Converter Based on Low-Offset Bandgap ReferenceJinpeng Qiu0Tong Liu1Xubin Chen2Yongheng Shang3Jiongjiong Mo4Zhiyu Wang5Hua Chen6Jiarui Liu7Jingjing Lv8Faxin Yu9School of Aeronautics and Astronautics, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, ChinaSchool of Aeronautics and Astronautics, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, ChinaSchool of Aeronautics and Astronautics, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, ChinaSchool of Aeronautics and Astronautics, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, ChinaSchool of Aeronautics and Astronautics, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, ChinaSchool of Aeronautics and Astronautics, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, ChinaSchool of Aeronautics and Astronautics, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, ChinaSchool of Aeronautics and Astronautics, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, ChinaSchool of Aeronautics and Astronautics, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, ChinaSchool of Aeronautics and Astronautics, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, ChinaThis paper presents a new 12-bit digital to analog converter (DAC) circuit based on a low-offset bandgap reference (BGR) circuit with two cascade transistor structure and two self-contained feedback low-offset operational amplifiers to reduce the effects of offset operational amplifier voltage effect on the reference voltage, PMOS current-mirror mismatch, and its channel modulation. A Start-Up circuit with self-bias current architecture and multipoint voltage monitoring is employed to keep the BGR circuit working properly. Finally, a dual-resistor ladder DAC-Core circuit is used to generate an accuracy DAC output signal to the buffer operational amplifier. The proposed circuit was fabricated in CSMC 0.5 μm 5 V 1P4M process. The measured differential nonlinearity (DNL) of the output voltages is less than 0.45 LSB and integral nonlinearity (INL) less than 1.5 LSB at room temperature, consuming only 3.5 mW from a 5 V supply voltage. The DNL and INL at −55°C and 125°C are presented as well together with the discussion of possibility of improving the DNL and INL accuracy in future design.http://dx.doi.org/10.1155/2017/1658695 |
| spellingShingle | Jinpeng Qiu Tong Liu Xubin Chen Yongheng Shang Jiongjiong Mo Zhiyu Wang Hua Chen Jiarui Liu Jingjing Lv Faxin Yu A New Digital to Analog Converter Based on Low-Offset Bandgap Reference Journal of Electrical and Computer Engineering |
| title | A New Digital to Analog Converter Based on Low-Offset Bandgap Reference |
| title_full | A New Digital to Analog Converter Based on Low-Offset Bandgap Reference |
| title_fullStr | A New Digital to Analog Converter Based on Low-Offset Bandgap Reference |
| title_full_unstemmed | A New Digital to Analog Converter Based on Low-Offset Bandgap Reference |
| title_short | A New Digital to Analog Converter Based on Low-Offset Bandgap Reference |
| title_sort | new digital to analog converter based on low offset bandgap reference |
| url | http://dx.doi.org/10.1155/2017/1658695 |
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