AMIS-720442 Datasheet, PDF (8/16 Pages) AMI SEMICONDUCTOR – 400dpi Contact Image Sensor

AMIS-720442-A: 400dpi Contact Image Sensor
Data Sheet
9.0 Video Output Response under Exposure
The four video signal output as a function of light exposure are given in Graphs A, B, C, and D. The measurements are conducted in
black box that enclosed the light source, the PCB and the instrument to measure the light power. The LED source mounted at the top
radiated its light energy directly on the image sensor of the A6 PCB that was lying flat at the bottom of box. The video output was
measured at the amplifier output of the A6 PCB. The PCB setup condition is described Section 8.0. Note that the gain of the amplifier
is set to one. Also the clock duty cycle is set to 25 percent for the 2.0MHz clock frequency and set to 50 percent for the 5.0MHz.
VIDEO OUTPUT VS EXPOSURE
PI3042A RED LED RESPONSE 2.0 Mhz
3.5
3
2.5
2
1.5
1
0.5
0
EXPOSURE (uJ/cm^2)
Figure 7: A Typical Video Output a as Function of Light Exposure
EXP
AMI Semiconductor – May 06, M-20571-001
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