A 3.5ppm/<I>°</I>C 0.85V Bandgap Reference Circuit without Resistors

Jing WANG; Qiang LI; Li DING; Hirofumi SHINOHARA; Yasuaki INOUE

doi:10.1587/transfun.E99.A.1430

A 3.5ppm/°C 0.85V Bandgap Reference Circuit without Resistors

Jing WANG, Qiang LI, Li DING, Hirofumi SHINOHARA, Yasuaki INOUE

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A CMOS bandgap reference circuit without resistors, which can successfully operate under 1V supply voltage is proposed. The improvement is realized by the technique of the voltage divider and a new current source. The most attractive merit is that the proposed circuit breaks the bottleneck of low supply voltage design caused by the constant bandgap voltage value (1.25V). Moreover, the temperature coefficient of the reference voltage V_ref is improved by compensating the temperature dependence caused by the current source. The simulation results using a standard CMOS 0.18 um process show that the value of V_ref can be achieved around 0.5 V with a minimum supply voltage of 0.85 V. Meanwhile, the temperature coefficient of the output voltage is only 3.5ppm/°C from 0 °C to 70 °C.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E99-A No.7 pp.1430-1437

Publication Date: 2016/07/01

Publicized

Online ISSN: 1745-1337

DOI: 10.1587/transfun.E99.A.1430

Type of Manuscript: PAPER

Category: VLSI Design Technology and CAD

Authors

Jing WANG
  the Waseda University
Qiang LI
  the Waseda University
Li DING
  the Waseda University
Hirofumi SHINOHARA
  the Waseda University
Yasuaki INOUE
  the Waseda University

Keyword

analog, bandgap reference, sub-1-V, voltage reference, supply-insensitive

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Jing WANG, Qiang LI, Li DING, Hirofumi SHINOHARA, Yasuaki INOUE, "A 3.5ppm/°C 0.85V Bandgap Reference Circuit without Resistors" in IEICE TRANSACTIONS on Fundamentals, vol. E99-A, no. 7, pp. 1430-1437, July 2016, doi: 10.1587/transfun.E99.A.1430.
Abstract: A CMOS bandgap reference circuit without resistors, which can successfully operate under 1V supply voltage is proposed. The improvement is realized by the technique of the voltage divider and a new current source. The most attractive merit is that the proposed circuit breaks the bottleneck of low supply voltage design caused by the constant bandgap voltage value (1.25V). Moreover, the temperature coefficient of the reference voltage V_ref is improved by compensating the temperature dependence caused by the current source. The simulation results using a standard CMOS 0.18 um process show that the value of V_ref can be achieved around 0.5 V with a minimum supply voltage of 0.85 V. Meanwhile, the temperature coefficient of the output voltage is only 3.5ppm/°C from 0 °C to 70 °C.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1587/transfun.E99.A.1430/_p

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@ARTICLE{e99-a_7_1430,
author={Jing WANG, Qiang LI, Li DING, Hirofumi SHINOHARA, Yasuaki INOUE, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A 3.5ppm/°C 0.85V Bandgap Reference Circuit without Resistors},
year={2016},
volume={E99-A},
number={7},
pages={1430-1437},
abstract={A CMOS bandgap reference circuit without resistors, which can successfully operate under 1V supply voltage is proposed. The improvement is realized by the technique of the voltage divider and a new current source. The most attractive merit is that the proposed circuit breaks the bottleneck of low supply voltage design caused by the constant bandgap voltage value (1.25V). Moreover, the temperature coefficient of the reference voltage V_ref is improved by compensating the temperature dependence caused by the current source. The simulation results using a standard CMOS 0.18 um process show that the value of V_ref can be achieved around 0.5 V with a minimum supply voltage of 0.85 V. Meanwhile, the temperature coefficient of the output voltage is only 3.5ppm/°C from 0 °C to 70 °C.},
keywords={},
doi={10.1587/transfun.E99.A.1430},
ISSN={1745-1337},
month={July},}

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TY - JOUR
TI - A 3.5ppm/°C 0.85V Bandgap Reference Circuit without Resistors
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1430
EP - 1437
AU - Jing WANG
AU - Qiang LI
AU - Li DING
AU - Hirofumi SHINOHARA
AU - Yasuaki INOUE
PY - 2016
DO - 10.1587/transfun.E99.A.1430
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E99-A
IS - 7
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - July 2016
AB - A CMOS bandgap reference circuit without resistors, which can successfully operate under 1V supply voltage is proposed. The improvement is realized by the technique of the voltage divider and a new current source. The most attractive merit is that the proposed circuit breaks the bottleneck of low supply voltage design caused by the constant bandgap voltage value (1.25V). Moreover, the temperature coefficient of the reference voltage V_ref is improved by compensating the temperature dependence caused by the current source. The simulation results using a standard CMOS 0.18 um process show that the value of V_ref can be achieved around 0.5 V with a minimum supply voltage of 0.85 V. Meanwhile, the temperature coefficient of the output voltage is only 3.5ppm/°C from 0 °C to 70 °C.
ER -