대한전자공학회논문지 (Journal of the Korean Institute of Telematics and Electronics)

대한전자공학회 (The Institute of Electronics and Information Engineers)
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커패시턴스 오차가 아날로그 디지털 변환의 정확도에 미치는 영향

Effect of Capacitance Error on the A/D conversion Accuracy

  • Lee, Yun-Tae (Samsung Semiconductor and Telecommunication, Inc.) ;
  • Kim, Chung-Gi (Dept. of Electrical Eng. and Electronic Eng., Korea advanced Institute of Science and Technology) ;
  • Gyeong, Jong-Min (Dept. of Electrical Eng. and Electronic Eng., Korea advanced Institute of Science and Technology)
  • 발행 : 1985.09.01
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초록

The e(lect of capacitance error on the A/D conversion accuracy in the A/D converter using binary-weighted capacitor array was scruntized. Besides the Monte-Carlo method considering the inter-capacitance ratios as random variables, " correlation approach" con-sidering the correlation coefficient between capacitances is proposed in this paper. Bt was observed by the measurement of capacitances of monolithic MO5 capacitors that the correla-tion coefficient between capacitors decreases as the capacitor size incrrases. It was also verified that the parallel connection of unit capacitors and the common centroid layout scheme signi(icantly increase the inter-capacitance correlation coefficients.

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