摘要
针对Kodak公司生产的CCD图像传感器KAI-02150,设计了双通道模拟前端采集电路。给出了电路的结构组成,根据KAI-02150的驱动和输出参数要求设计了各个模块的具体电路。通过SPI接口对AD9920A的寄存器进行配置,可以满足多种工作模式切换的需要。与传统的CCD模拟前端采集方案相比,文中的设计更加灵活简单、稳定可靠。测试表明,设计的输出驱动时钟满足KAI-02150的输入要求,可以驱动CCD输出模拟信号,并完成相关双采样和A/D转换得到数字视频信号。
A dual-channel analog front end circuit for KAI-02150 CCD image sensor is designed.Specific circuits for each module of AFE are presented according to the KAI-02150 parameters.After AD9920A register＇s configuration accomplished through the SPI interface,a variety of working modes can be switched from one to another.Compared with the traditional analog front end solution,this design is more flexible,simple,stable and reliable.Tests show that the output for clock-driven timing of the design can meet the requirements of KAI-02150.After the correlated double sampling and A/D conversion,digital video signals can be output.
出处
《电子科技》
2012年第3期113-116,共4页
Electronic Science and Technology
