A 3.5 ppm/°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 3.5 ppm/°C 0.85V bandgap reference circuit without resistors

Jing Wang, Qiang Li, Li Ding, Hirofumi Shinohara, Yasuaki Inoue

Graduate School of Information, Production and Systems

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

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 (1.25 V). 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 3.5 ppm/°C from 0 °C to 70 °C.

Original language	English
Pages (from-to)	1430-1437
Number of pages	8
Journal	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Volume	E99A
Issue number	7
DOIs	https://doi.org/10.1587/transfun.E99.A.1430
Publication status	Published - 2016 Jul 1

Keywords

Analog
Bandgap reference
Sub-1-V
Supplyinsensitive
Voltage reference

ASJC Scopus subject areas

Signal Processing
Computer Graphics and Computer-Aided Design
Applied Mathematics
Electrical and Electronic Engineering

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10.1587/transfun.E99.A.1430

Cite this

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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 (1.25 V). Moreover, the temperature coefficient of the reference voltage Vref 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 Vref 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 3.5 ppm/°C from 0 °C to 70 °C.",

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T1 - A 3.5 ppm/°C 0.85V bandgap reference circuit without resistors

AU - Wang, Jing

AU - Li, Qiang

AU - Ding, Li

AU - Shinohara, Hirofumi

AU - Inoue, Yasuaki

PY - 2016/7/1

Y1 - 2016/7/1

N2 - 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 (1.25 V). Moreover, the temperature coefficient of the reference voltage Vref 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 Vref 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 3.5 ppm/°C from 0 °C to 70 °C.

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 (1.25 V). Moreover, the temperature coefficient of the reference voltage Vref 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 Vref 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 3.5 ppm/°C from 0 °C to 70 °C.

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KW - Sub-1-V

KW - Supplyinsensitive

KW - Voltage reference

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A 3.5 ppm/°C 0.85V bandgap reference circuit without resistors

Abstract

Keywords

ASJC Scopus subject areas

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