采用新型读出电路的CMOS图像传感器研究  

CMOS image sensor with a new type read out circuit

作　　者：林聚承[1] 袁祥辉[1] 吕果林[1] 黄友恕[1] 

机构地区：[1]重庆大学光电技术及系统教育部重点实验室

出　　处：《光电工程》2007年第5期67-70,共4页Opto-Electronic Engineering

基　　金：人工视网膜及其评估方法的研究(30470469)

摘　　要：设计了一种采用新型读出电路的CMOS图像传感器,该器件电路结构简单,由四个MOS管,一个电容构成;驱动信号源少,只需两个相配合的脉冲;功耗小于0.7mW;单端输出方便模数转换的视频信号;可以实现片内差分。给出了理论分析和电路模拟仿真的结果数据及波形。采用标准1.2μmN阱DPDMCMOS工艺设计了一个256元的实验器件,像元中心距为25μm,器件尺寸大小为1mm×11mm,并对器件进行了主要参数的测试和数据分析,验证了该器件的功能。A CMOS image sensor with a novel reading out circuit is proposed. The circuit consists of four MOS transistors and one capacitance. The sensor is driven by two related plus and power consumption is less than 0,7mW. Video signal which can convert easily from analog to digital is output by single end. The sensor can achieve on-chip difference, In this paper, the theoretical analysis and simulation results of the circuit are given. A 256-pixel test device is designed by using the 1,2μm N-Well double poly double mental standard CMOS processes, Dimension of the chip is 1mm× 11mm with 25μm pixel distance. The measurement and analysis of the main parameters are implemented successfully and the device＇s function is verified.

关 键 词：CMOS图像传感器 动态源随器 积分时间 

分 类 号：TN36[电子电信—物理电子学]