A New Digital to Analog Converter Based on Low-Offset Bandgap Reference
Joint Authors
Yu, Faxin
Shang, Yongheng
Wang, Zhiyu
Mo, J.
Qiu, Jinpeng
Liu, Tong
Chen, Xubin
Chen, Hua
Liu, Jiarui
Lv, Jingjing
Source
Journal of Electrical and Computer Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-01-02
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Information Technology and Computer Science
Abstract EN
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.
American Psychological Association (APA)
Qiu, Jinpeng& Liu, Tong& Chen, Xubin& Shang, Yongheng& Mo, J.& Wang, Zhiyu…[et al.]. 2017. A New Digital to Analog Converter Based on Low-Offset Bandgap Reference. Journal of Electrical and Computer Engineering،Vol. 2017, no. 2017, pp.1-10.
https://search.emarefa.net/detail/BIM-1175224
Modern Language Association (MLA)
Qiu, Jinpeng…[et al.]. A New Digital to Analog Converter Based on Low-Offset Bandgap Reference. Journal of Electrical and Computer Engineering No. 2017 (2017), pp.1-10.
https://search.emarefa.net/detail/BIM-1175224
American Medical Association (AMA)
Qiu, Jinpeng& Liu, Tong& Chen, Xubin& Shang, Yongheng& Mo, J.& Wang, Zhiyu…[et al.]. A New Digital to Analog Converter Based on Low-Offset Bandgap Reference. Journal of Electrical and Computer Engineering. 2017. Vol. 2017, no. 2017, pp.1-10.
https://search.emarefa.net/detail/BIM-1175224
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1175224