高速面阵CCD KAI-01050功率驱动电路设计

Design of power driving circuit for high-speed area array CCD KAI-01050

KAI-01050是KODAK公司生产的最高帧频可达120 f/s的高速面阵CCD。针对其驱动信号特点,详细介绍CCD各部分功率驱动电路设计。此CCD功率驱动电路的难点包括40 MHz高速水平转移和复位时钟驱动、三电平阶梯波形垂直转移时钟V1和高压脉冲电子快门信号驱动设计。利用高速时钟驱动器ISL55110和钳位电路实现了高速水平转移时钟的驱动;利用两个高速MOSFET驱动器组合的方案,实现了三电平阶梯波形垂直转移时钟V1的驱动;利用两个互补高速三极管轮流开关工作实现了高压脉冲电子快门信号的驱动。对部分重点电路进行了仿真验证,并通过测试验证了设计的驱动电路满足高帧频面阵CCD KAI-01050的各项驱动要求。

Kodak＇ s KAI-01050 is a high-speed area array CCD whose frame rate is up to 120 frames per second.The design of each power driving circuit in this CCD is introduced.The design difficulties include 40 MHz high-speed horizontal transfer,reset clock driver,three-levels echelon waveform vertical transfer clock V1 and high-voltage pulse electronic shutter driving circuits.High-speed driver ISL55110 and clamp circuit are used to drive high-speed horizontal transfer clock.Two high-speed MOSFET drivers are combined to drive three-level echelon waveform vertical transfer clock V1.The work mode that two high-speed complementary transistors switch on and off by turns are adopted to drive high-voltage pulse electronic shutter.Some important circuits were simulated and verified in the PSpice software of Cadence.The experiment result shows that all the circuits can satisfy the requirement of power driving of the high-speed area array CCD KAI-01050.