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A High-Order Curvature Compensated CMOS Bandgap Reference Without Resistors

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Abstract

This paper presents a resistor-less high-order curvature compensation bandgap voltage reference. A high-order curvature compensation is based on generating successive VGS voltages with different temperature characteristics, which are used to cancel thermal nonlinearity the first- and higher-order terms of the transistor voltage VEB. At the same time, a piecewise-linear curvature compensation circuit is used to broaden the temperature range of the whole circuit and achieve low-temperature coefficient. The proposed bandgap reference was designed using standard CSMC 0.18-μm CMOS technology. Simulation results indicate that the proposed bandgap reference achieves the best temperature coefficient of 2.37 ppm/°C from − 40 to 125 °C with a supply voltage of 5 V. The BGR output is about 1.1881 V and a − 60.7-dB PSRR at 10 kHz while only consuming 200 μW.

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Data Availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

This work was supported in part by the National Natural Science Foundation of China under Grant 61650404 and the Science and Technology Project of Jiangxi Provincial Education Department under Grant GJJ201411.

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Authors and Affiliations

  1. College of Physics and Electronic Information, Gannan Normal University, Ganzhou, 341000, China

    Xiuping Feng, Hua Wu, Libin Huang, Jia Yao & Wei Zeng

  2. Sichuan Xinsheng Xinguo Technology Co., Ltd., Chengdu, 610000, China

    Xiuping Feng & Xianguo Cao

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  1. Xiuping Feng
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  2. Hua Wu
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  3. Libin Huang
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  4. Jia Yao
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  5. Wei Zeng
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Correspondence to Hua Wu.

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Feng, X., Wu, H., Huang, L. et al. A High-Order Curvature Compensated CMOS Bandgap Reference Without Resistors. Circuits Syst Signal Process 42, 6444–6459 (2023). https://doi.org/10.1007/s00034-023-02431-1

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