한국정보기술학회 영문논문지 (Journal of Advanced Information Technology and Convergence)

  • 제8권2호
  • /
  • Pages.59-67
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  • 2018
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  • 2234-1072(pISSN)
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  • 2234-0963(eISSN)
한국정보기술학회 (Korean Institute of Information Technology)
권호 표지
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A Low Voltage Bandgap Current Reference with Low Dependence on Process, Power Supply, and Temperature

  • Cheon, Jimin (School of Electronic Engineering, Kumoh National Institute of Technology)
  • 투고 : 2018.12.04
  • 심사 : 2018.12.25
  • 발행 : 2018.12.31
⟨ 이전 논문 다음 논문 ⟩

초록

The minimum power supply voltage of a typical bandgap current reference (BGCR) is limited by operating temperature and input common mode range (ICMR) of a feedback amplifier. A new BGCR using a bandgap voltage generator (BGVG) is proposed to minimize the effect of temperature, supply voltage, and process variation. The BGVG is designed with proportional to absolute temperature (PTAT) characteristic, and a feedback amplifier is designed with weak-inversion transistors for low voltage operation. It is verified with a $0.18-{\mu}m$ CMOS process with five corners for MOS transistors and three corners for BJTs. The proposed circuit is superior to other reported current references under temperature variation from $-40^{\circ}C$ to $120^{\circ}C$ and power supply variation from 1.2 V to 1.8 V. The total power consumption is $126{\mu}W$ under the conditions that the power supply voltage is 1.2 V, the output current is $10{\mu}A$, and the operating temperature is $20^{\circ}C$.

키워드

과제정보

연구 과제번호 : HRD Program for Intelligent semiconductor Industry

연구 과제 주관 기관 : National Research Foundation of Korea (NRF), KIAT (Korea Institute for Advancement of Technology)

참고문헌

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