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Pixel and Column Fixed Pattern Noise Suppression Mechanism in CMOS Image Sensor 被引量：5

Pixel and Column Fixed Pattern Noise Suppression Mechanism in CMOS Image Sensor
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摘要 A double sampling circuit to eliminating fixed pattern noise(FPN) in CMOS image sensor (CIS) is presented. Double sampling is implemented by column switch capacitor amplifier directly, and offset compensation is added to the amplifier to suppress column FPN. The amplifier is embedded in a 64×64 CIS and successfully fabricated with chartered 0.35 μm process. Theory analysis and circuit simulation indicate that FPN can be suppressed from millivolt to microvolt. Test results show that FPN is smaller than one least-significant bit of 8 bit ADC. FPN is reduced to an acceptable level with double sampling technique implemented with switch capacitor amplifier. A double sampling circuit to eliminating fixed pattern noise（FPN） in CMOS image sensor （CIS） is presented. Double sampling is implemented by column switch capacitor amplifier directly, and offset compensation is added to the amplifier to suppress column FPN. The amplifier is embedded in a 64 ×64 CIS and successfully fabricated with chartered 0.35μm process. Theory analysis and circuit simulation indicate that FPN can be suppressed from millivolt to microvolt. Test results show that FPN is smaller than one least-significant bit of 8 bit ADC. FPN is reduced to an acceptable level with double sampling technique implemented with switch capacitor amplifier.
作者 徐江涛 姚素英 李斌桥
机构地区 School of Electronic Information Engineering
出处 《Transactions of Tianjin University》 EI CAS 2006年第6期442-445,共4页 天津大学学报（英文版）
基金 Supported by National Natural Science Foundation of China (No.60576025).
关键词 CMOS image sensor active pixel fixed pattern noise double sampling offset compensation CMOS图像传感器 像素 固定模式噪声 二次质量检验 偏置补偿
分类号 TP212.1 [自动化与计算机技术—检测技术与自动化装置]
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参考文献8

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  • 1赵玲,李跃进.一种新型的相关焦平面CMOS读出电路[J].红外技术,2006,28(1):26-30. 被引量：2
  • 2范红,陈桂林.CMOS APS图像传感器的像质分析[J].光电工程,2006,33(5):104-107. 被引量：6
  • 3徐江涛,姚素英,李斌桥,史再峰,高静.Design,Analysis,and Optimization of a CMOS Active Pixel Sensor[J].Journal of Semiconductors,2006,27(9):1548-1551. 被引量：2
  • 4刘宇,王国裕.CMOS图像传感器固定模式噪声抑制新技术。[J].固体电子学研究与进展,2006,26(3):345-348. 被引量：4
  • 5侯泊亨,顾新.VHDL硬件描述语言与数字逻辑电路设计[M].西安:西安电子科技大学出版社,2003.
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引证文献5

二级引证文献18

Transactions of Tianjin University
2006年 第6期

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