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Sub 1-V supply voltage-reference based on mutual temperature cancellation of VT and VTH

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Abstract

In this paper, a novel non-bandgap CMOS voltage reference with sub one-volt power supply is proposed and simulated in 0.18 μm standard CMOS technology. Thermal voltage obtained from ∆VBE with positive and threshold voltage of a nMOS transistor with negative temperature coefficient are utilized to achieve a stable-temperature voltage reference. A current proportional-to- threshold voltage and a current proportional-to-absolute-temperature are used to produce positive and negative temperature coefficient parts. The reference voltage is obtained from the proper combination of these two parts. The nominal output voltage reference is about 0.5-V with the temperature coefficient of 36 ppm/ °C across a temperature range of 0–120 °C at 0.9-V of supply. The power supply noise attenuation of 84 dB is achieved without any filtering capacitor below 15 Hz at 1-V of Vdd.

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Authors and Affiliations

  1. Department of Aviation Electronics, Civil Aviation Technology College, Tehran, Iran

    M. Rashtian

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  1. M. Rashtian
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Correspondence to M. Rashtian.

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Rashtian, M. Sub 1-V supply voltage-reference based on mutual temperature cancellation of VT and VTH. Analog Integr Circ Sig Process 105, 477–482 (2020). https://doi.org/10.1007/s10470-020-01704-y

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  • DOI: https://doi.org/10.1007/s10470-020-01704-y

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