Mutual Compensation of Threshold Voltage and Thermal Voltage Temperature Effects with Applications in Voltage Reference Generator

DOI

10.2991/eia-17.2017.71How to use a DOI?

Keywords

voltage reference; low power; low TC; CMOS; thermal voltage

Abstract

A low power, low temperature coefficient (TC) CMOS voltage reference generator is proposed in this paper, which exploits temperature mutual compensation relationship between threshold voltage and thermal voltage, and provides a mean reference voltage of 411.8mV.In this reference, a proportional to absolute temperature (PTAT) current containing the thermal voltage which has a positive TC is generated, and then it is injected into a diode-connected NMOS transistor that supply the threshold voltage which has a negative TC. The mixing of the two voltages produces a reference voltage with zero TC. The proposed circuit is verified by SPICE simulation with CMOS 0.18um process technology. The simulation results show that the power consumption is 17.9nW and the TC is 8.6ppm/øC. The proposed circuit is suitable for power sensitive applications.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jiangxu WU
AU  - Jianguo HU
AU  - Zhikui DUAN
PY  - 2017/07
DA  - 2017/07
TI  - Mutual Compensation of Threshold Voltage and Thermal Voltage Temperature Effects with Applications in Voltage Reference Generator
BT  - Proceedings of the 2017 International Conference on Electronic Industry and Automation (EIA 2017)
PB  - Atlantis Press
SP  - 331
EP  - 336
SN  - 1951-6851
UR  - https://doi.org/10.2991/eia-17.2017.71
DO  - 10.2991/eia-17.2017.71
ID  - WU2017/07
ER  -