인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.20 No.1
- 발행연도
- 2020.2
- 수록면
- 105 - 118 (14page)
- DOI
- 10.5573/JSTS.2020.20.1.105
이용수
초록· 키워드
This study presents a 12-bit 40 MS/s successive approximation register (SAR) analog-to-digital converter (ADC) that utilizes a digital foreground self-calibration scheme for capacitor mismatches and a low-noise dynamic comparator. To reduce hardware complexity and AD power consumption, a split-capacitor, capacitive digital-to-analog converter (CDAC) is used to generate the comparator input voltage for binary search operations at the cost of increased capacitor matching requirements. Capacitor mismatches were calibrated with the digital foreground self-calibration technique, which was modified from our previous work to be adapted for the split-capacitor CDAC. In addition, a low-noise dynamic comparator that does not need an additional circuit and conversion cycles is also presented. A prototype ADC, which occupies an active die area of 0.098 ㎟, is fabricated with a 65 nm standard CMOS process. By using the mismatch calibration scheme, the ADC achieves a spurious-free dynamic range and a signal-to-noise and distortion ratios of 79.0 dB and 67.4 dB, respectively, for a sampling rate of 40-MSample/s. The power consumption of the ADC is 1.96 mW when driven with a 1.2 V supply and the figure-of-merit is 25.58 fJ/conversion-step.
#Successive approximation register
#analog-to-digital converter
#dynamic comparator
#input-referred noise
#capacitor mismatch
#self-calibration
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목차
- Abstract
- I. INTRODUCTION
- II. PROPOSED CAPACITOR MISMATCH CALIBRATION TECHNIQUE
- III. LOW NOISE DYNAMIC COMPARATOR
- IV. CIRCUIT DESIGN
- IV. PROTOTYPE DESIGN AND MEASUREMENT RESULTS
- V. CONCLUSION
- REFERENCES