ICX252AQ Datasheet, PDF (15/30 Pages) Sony Corporation – Diagonal 8.933mm (Type 1/1.8) Frame Readout CCD Image Sensor with Square Pixel for Color Cameras

ICX252AQ
Drive Circuit
3.3V
–7.5V 15V
0.1
XSUB
XV3
XSG3B
XSG3A
XV1
XSG1B
XSG1A
XV4
XV2
1/35V
1
20
2
19
3
18
0.1
4
17
5
16
CXD3400N
6
15
0.1
7
14
8
13
9
12
10
11
100k
1 2 3 4 5 6 7 8 9 10
47
2SK1875
CCD OUT
1.8k
VSUB Cont.
Hφ2
Hφ1
φRG
VR1 (1.3k)
Substrate bias
control signal
VSUB Cont.
Mechanical
shutter mode
tf ≈ 10ms
tr ≈ 2ms
Substrate bias
φSUB pin voltage
ICX252
(BOTTOM VIEW)
20 19 18 17 16 15 14 13 12 11
3.3/20V
0.01
0.1
0.1
0.1
1M
3.3/16V
GND
Internally
generated value
VSUB
2200p
Notes)
Substrate bias control
1. The saturation signal level decreases when exposure is performed using the mechanical shutter, so
control the substrate bias.
2. A saturation signal level equivalent to that for continuous exposure can be assured by connecting a 1.3kΩ
grounding resistor to the CCD CSUB pin.
Drive timing precautions
1. Blooming occurs in modes (high frame rate readout, etc.) that do not use the mechanical shutter, so do
not ground the connected 1.3kΩ resistor.
2. tf is slow, so the internally generated voltage VSUB may not drop to a sufficiently low level if the substrate
bias control signal is not set to high level 40ms before entering the exposure period and the 1.3kΩ resistor
connected to the CSUB pin is not grounded.
3. The blooming signal generated during exposure in mechanical shutter mode is swept by providing one
field or more of idle transfer through vertical register high-speed sweep transfer from the time the
mechanical shutter closes until sensor readout is performed. However, note that the VL potential and the
φSUB pin DC voltage sag at this time.
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