Statistical Analysis of the Random Telegraph Noise in a 1.1 μm Pixel, 8.3 MP CMOS Image Sensor Using On-Chip Time Constant Extraction Method

被引：13
作者：
Chao, Calvin Yi-Ping [1 ]
Tu, Honyih [1 ]
Wu, Thomas Meng-Hsiu [1 ]
Chou, Kuo-Yu [1 ]
Yeh, Shang-Fu [1 ]
Yin, Chin [1 ]
Lee, Chih-Lin [1 ]
机构：
[1] Taiwan Semicond Mfg Co, Hsinchu Sci Pk, Hsinchu 300, Taiwan
来源：
SENSORS | 2017年 / 17卷 / 12期
关键词：
CMOS image sensor (CIS); random telegraph noise (RTN); correlated double sampling (CDS); RTN emission and capture time constant; backside-illuminated technology (BSI); pinned photodiode (PPD); Gumbel distribution; FLUCTUATIONS; SIGNALS;
D O I：
10.3390/s17122704
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A study of the random telegraph noise (RTN) of a 1.1 mu m pitch, 8.3 Mpixel CMOS image sensor (CIS) fabricated in a 45 nm backside-illumination (BSI) technology is presented in this paper. A noise decomposition scheme is used to pinpoint the noise source. The long tail of the random noise (RN) distribution is directly linked to the RTN from the pixel source follower (SF). The full 8.3 Mpixels are classified into four categories according to the observed RTN histogram peaks. A theoretical formula describing the RTN as a function of the time difference between the two phases of the correlated double sampling (CDS) is derived and validated by measured data. An on-chip time constant extraction method is developed and applied to the RTN analysis. The effects of readout circuit bandwidth on the settling ratios of the RTN histograms are investigated and successfully accounted for in a simulation using a RTN behavior model.
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页数：21
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