CCD imaging electrical system of AOTF imaging spectrometer

In consideration of the requirement of Acousto Optics Tunable Filter(AOTF) imagers, a CCD imaging electronic system was designed. The CCD chip CCD57-10 from e2v company was chosen as the image sensor, and the DC/DC+LDO structure was advanced to generate each bias voltage. Then a Field Programmable Gate Array(FPGA) was used to generate driving clock, the AD9826 was taken to convert the CCD output analog signal to a digital signal, and USB or CameraLink interface was adopted to communicate with a computer. Furthermore, a CCD protect circuit was designed and the layout of Printed Circuit Board( PCB) of mixed signals was optimized. The test results for functional units indicate that the system can offer the peak to peak ripple noise of bias voltage less than 10 mV and a AD convert precision of 12 bit. Moreover, the system can image correctly with a image transmit rate of 10 framd/s and the signal to noise ratio better than 54 dB. The system power consumption is less than 5 W. The design can meet the demands of AOTF imaging spectrometers for CCD imaging electronic systems.