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一种适用于16级TDI CMOS图像传感器的电流型累加器（英文）
  • ISSN号：0465-7942
  • 期刊名称：《南开大学学报：自然科学版》
  • 时间：0
  • 分类：TN402[电子电信—微电子学与固体电子学]
  • 作者机构：[1]天津大学电子信息工程学院,天津300072
  • 相关基金：Supported by National Natural Science Foundation of China（61036004,61076024）
作者： 高岑[1], 姚素英[1], 高静[1]
关键词： 电流累加器, 读出电路, 时间延迟积分(TDI), CMOS图像传感器, current accumulator, readout circuits, time delay integration（TDI）, CMOS image sensors
中文摘要：

提出一种适用于混合域累加的16级时间延迟积分（Time Delay Integration,TDI）型CMOS图像传感器的电流型累加器.为了实现混合域的累加,电流信号首先在电流型累加器中累加4次,累加的结果被量化成数字量后再次完成4次的累加,即4×4的混合累加模式.详细分析了电流型累加器的热噪声和闪烁噪声特性,并给出了等效输入噪声的均方根电压表达式,并结合仿真工具进行分析验证.提出的电流型累加器电路在CMOS180nm 1.8V供电电源的工艺下实现,电路的功耗为0.37mW,芯片面积为0.03mm×0.82mm.经过电流型累加器的4次累加后,能够将信号的信噪比提升5.86dB.

英文摘要：

A current-mode accumulator used in mixed analog and digital domain for 16-stage TDI CMOS image sensor is presented.The signal current is used instead of signal voltage as the information carrier to realize accumulation.The current signals are accumulated 4times and then converted to digital signals to accomplish the other accumulation by 4times, i e, 4×4accumulation mode.Both thermal noise and flicker noise are analyzed and the expressions of the input-referred root mean square（ RMS） noise are given.The accumulator was postsimulated using 1P4M0.18 μ m CMOS process technology.The power consumption is 0.37mW at 1.8Vsupply, and the area is 0.03mm×0.82mm.The signal-to-noise ratio（ SNR） can be enhanced 5.86dB by the current-mode accumulator.

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期刊信息
  • 《南开大学学报：自然科学版》
  • 中国科技核心期刊
  • 主管单位:教育部
  • 主办单位:南开大学
  • 主编：田建国
  • 地址：天津南开区卫津路94号
  • 邮编：300071
  • 邮箱：
  • 电话：022-23501681
  • 国际标准刊号：ISSN：0465-7942
  • 国内统一刊号：ISSN：12-1105/N
  • 邮发代号:6-174
  • 获奖情况:
  • 中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘（网络版）,德国数学文摘,英国动物学记录,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:4822