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An ultra-linear CMOS image sensor for a high-accuracy imaging system

机译:用于高精度成像系统的超线性CMOS图像传感器

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This paper presents an ultra-linear CMOS image sensor (CIS) which can be used in the high-accuracy imaging system. A new technique has been introduced to implement unity gain buffer as an APS readout circuit. Moreover, to save power consumption and silicon area without losing speed, a column 10-Bit SS-ADC with built-in correlated double sampling function is presented. Nonlinearity, dynamic range, total input referred readout noise, and power consumption for the proposed readout circuit are 0.08%, 49 dB, 5.05 mu V, and 126 mu W, respectively. The results indicate up to 12.5 times linearity and 15 times gain error are improved compared with a conventional SF readout. A 320 x 240 pixel CIS has been designed in the 0.18-mu m CMOS technology, and important results are provided.
机译:本文提出了一种可用于高精度成像系统的超线性CMOS图像传感器(CIS)。引入了一种新技术来实现单位增益缓冲器作为APS读出电路。此外,为了节省功耗和硅面积而不损失速度,提出了一种具有内置相关双采样功能的列10位SS-ADC。拟议的读出电路的非线性度,动态范围,总输入参考读出噪声和功耗分别为0.08%,49 dB,5.05μV和126μW。结果表明,与传统的SF读数相比,线性度提高了12.5倍,增益误差提高了15倍。采用0.18微米CMOS技术设计了320 x 240像素的CIS,并提供了重要的结果。

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