The high speed, low noise and integration characteristic are the main technology and the main development
directions on the signal process circuit of the image sensor, especially in high resolution remote sensing. With these
developments, the high noise limiting circuits, high speed data transfer system and the integrated design of the signal
process circuit become more and more important. Therefore the requirement of the circuit system simulation is more and
more important during the system design and PCB board design process.
A CCD signal process circuit system which has the high speed, low noise and several selectable operate modes
function was designed and certificated in this paper, during the CCD signal process circuit system design, simulation was
made which include the signal integrity and the power integrity. The important devices such as FPGA and the DDR2
device were simulated, using the power integrity simulation the sensitive power planes of the FPGA on the PCB was
modified to make the circuit operate more stabilize on a higher frequency. The main clock path and the high speed data
path of the PCB board were simulated with the signal integrity. All the simulation works make the signal process circuit
system’s image’s SNR value get higher and make the circuit system could operate well on higher frequency. In the board
testing process, the PCB time diagrams were listed on the testing chapter and the wave’s parameter meets the request.
The real time diagram and the simulated result of the PCB board was listed respectively. The CCD signal process
circuit system’s images’ SNR (Signal Noise Ratio) value, the 14bit AFE slew rate and the data transfer frequency is
listed in the paper respective.