摘要
介绍CMOS图像传感器列并行读出电路中 ,采用CDS电路以抑制像素FPN、复位噪声等 ,但导致列FPN的工作原理。为了消除列FPN ,提出了一种仪器放大器配置的精确平衡差分输出的读出电路结构 ,再结合CDS技术 ,可有效地抑制像素和列FPN ,改善图像质量。
The generation process of the column-wise FPN in the column parallel readout circuits of CMOS image sensors is discussed when CDS circuits suppreses KTC noise, 1/f noise, and FPN from the pixel. In order to remove the column-wise FPN, an instrument structure readout circuit with accurate balancing differential output is provided, which can be used to compensate the column processing circuits offset variation combined with CDS technique.
出处
《传感技术学报》
CAS
CSCD
2004年第1期78-80,共3页
Chinese Journal of Sensors and Actuators
