基于FPGA的一种长线阵CCD驱动时序电路设计

Design of the time sequence driving circuit for a king of long linear CCD based on FPGA

驱动时序电路的设计是CCD应用的关键技术,在分析ATMEL公司的TH7834C型长线阵CCD器件驱动时序关系的基础上,设计了TH7834C的驱动时序电路。选用现场可编程门阵列(FPGA)作为硬件设计平台,使用VHDL语言对驱动时序电路进行了硬件描述,采用EDA软件对所设计的驱动时序进行了功能仿真,针对ALTERA公司的现场可编程门阵列EPF10K30RC240-3进行了适配。工程实践结果表明,所设计的驱动时序电路不仅可以满足TH7834C型CCD的驱动要求,而且该驱动电路结构简单、功耗小、成本低、抗干扰能力强,具有较高的实用价值,适用于其它型号的CCD。

Design of time sequence driving circuit is the key technology for applications of CCD.Driving schedules of TH7834C(one kind of long linear CCD produced by ATMEL Co Ltd)are examined.The time sequence driving circuit is designed for TH7834C.Field Programmable Gate Array(FPGA)is chosen as the hardware design platform,the time sequence driving circuit is described with VHDL.The design is successfully fulfills function simulation with EDA software and fits into EPF10K30RC240-3(a kind of FPGA products made by Altera Corporation).The result of the project realization indicates that the time sequence driving circuit is suitable for the driving of TH7834C,and the design is characterized by simple framework,low power consumption,strong anti-jamming ability,higher of practical value.The result can be proposed as a skill applied to CCD components of various models as well.