Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Start-up circuit with wide supply swing voltage range and modified power-up characteristic for bandgap reference voltage generator.

넓은 전압 범위와 개선된 파워-업 특성을 가지는 밴드갭 기준전압 발생기의 스타트-업 회로

  • Published : 2007.08.31
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Abstract

A start-up circuit of the bandgap reference voltage generator of cascode current mirror type with wide operating voltage range and enhanced power-up characteristics is proposed in the paper. It is confirmed by simulation that the newly proposed start-up circuit does not affect the operation of the bandgap reference voltage generatory even though the supply voltage(VDDA) is higher and has more stable power-up characteristic than the conventional start-up circuit. Test chips are designed and fabricated with $0.18{\mu}m$ tripple well CMOS process and their test has been completed. The mean value of measured the reference voltage(Vref) is 738mV and The three sigma value($3{\sigma}$) is 29.88mV.

본 논문에서는 넓은 동작전압 범위와 저소비 전력 그리고 개선된 파워-업 특성을 가지는 캐스코드 전류 거울형 CMOS 밴드갭 기준전압 발생기의 스타트-업 회로를 제안하였다. 새롭게 제안된 스타트-업 회로는 기존의 스타트-업 회로에 비해 안정적인 파워-업 특성을 가지며 공급전압(VDDA)이 높아지더라도 밴드갭 기준전압 발생기 회로의 동작에 영향을 미치지 않는 것을 모의실험을 통하여 확인하였고 $0.18{\mu}m$ tripple-well CMOS 공정을 이용하여 테스트 칩을 제작하고 측정하였다. 측정 된 기준전압 Vref는 평균값이 738mV이고 $3{\sigma}$는 29.88mV이다.

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References

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