B4. A four-phase CCD camera in the full frame architecture has a pixel array of 1024 x 1024 and a frame rate of 24 frame

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B4 A Four Phase Ccd Camera In The Full Frame Architecture Has A Pixel Array Of 1024 X 1024 And A Frame Rate Of 24 Frame 1 (466.38 KiB) Viewed 48 times

B4. A four-phase CCD camera in the full frame architecture has a pixel array of 1024 x 1024 and a frame rate of 24 frames per second. The charge of each pixel with four gates is transferred to an amplifier in the CCD. The size of one pixel is 30 μm². (a) Draw a schematic diagram for the full frame four-phase CCD array connected to the amplifier. (3 marks) (b) Estimate the minimum clock rate of the serial readout register. (3 marks) (c) What is the maximum number of gate transfer required for the charge in a pixel to reach the amplifier? (3 marks) (d) To keep at least 90% of charge for each pixel being transferred to the output of the CCD, estimate the charge transfer efficiency of a gate. (3 marks) (e) If the dark current density is 1.2 nA/cm², estimate the maximum number of electrons that will be increased in the transferred charge of a pixel due to the dark current. (3 marks)