LC9948G Datasheet, PDF (6/10 Pages) Sanyo Semicon Device – 1/5 Optical Size CCIR B/W Solid-State Image Sensor

LC9948G
Imaging Characteristics
Parameter
Symbol
Test method
Conditions
Sensitivity
S
1
Video signal imbalance
VF
2
Saturated signal
Vsat
3
Smear
SM
4
*1
Dark signal
Vdrk
5
Ta = 55°C
Gamma characteristics
γ
Note: 1. When the frame shift frequency is 3.55 MHz and the storage time is 1/50 second.
min
typ
max
Unit
110
mV
15
%
500
mV
0.04
%
7
mV
1
—
Test Procedures
The Sanyo evaluation board must be used for the following tests.
1. Sensitivity
Use a CCV31F pattern box (manufactured by Dai Nippon Printing Co., Ltd.) set up at a brightness of 1320 NT and
color temperature of 3100°K with no pattern. Image the pattern box with an HF16A lens (manufactured by Fujinon)
with a 1 mm thick C-500 IR cut filter in front of that lens.
Set the lens f-stop to f11 and set the lens to be 50 cm from the pattern box. Measure the CCD output signal from the
center of the image with this setup.
2. Video Signal Imbalance
Measure under the following conditions.
• Standard drive conditions (See the specifications document.)
• Use a 3200°K color temperature halogen lamp as the light source.
• Use a 1 mm thick C-500 IR cut filter.
Set the CCD surface illumination to 7 lux, and divide the image into 45 areas as shown in Figure 4.
Measure the average value for each block, and determine the maximum, minimum, and mean of those values.
Determine the ratio of the range of the block average values to the mean of the block average values.
VF = ^{maximum block average value – minimum block average value}
mean block average value
Figure 4
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