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參數(shù)資料
| 型號： | LA7265W |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Single-Chip Black and White CCD Camera Signal Processing IC(單片黑白CCD照相機信號處理芯片) |
| 中文描述： | 單芯片黑白CCD攝像機信號處理集成電路（單片黑白防治荒漠化公約照相機信號處理芯片） |
| 文件頁數(shù)： | 10/24頁 |
| 文件大?。?/td> | 355K |
| 代理商： | LA7265W |
Pin Functions
Unit (resistance:
), I: input, O: output, B: I/O, P: power supply
Function
No. 4850-10/24
LA7265W
Pin No.
Symbol
I/O
Equivalent circuit
1
2
3
4
5
6
CCD. IN
SH-GND
SH-D
VIDEO-V
CC
1
MAX. GAIN
CLP. C
I
P
I
P
I
B
CCD signal input. This pin can handle CCD signal reset levels up to
0.5 Vp-p. The data level is sliced at a maximum saturation output of
1.5 V.
CDS system ground. This line should be kept as short as possible
since the CDS system handles high frequencies.
This pin controls the charge and discharge speeds of the SH1 circuit.
Leave this pin open when a CCD element with 300,000 or fewer
pixels is used. Set this pin to 5 V when a CCD element with over
300,000 pixels is used.
AGC amplifier system V
CC
. Apply 5 V to this pin. Use pin 43 as the
corresponding ground. Either decouple (we recommend using a
power supply separate from the other V
CC
s for this voltage) or use a
DC-DC converter design so that signal component frequencies do
not leak into this V
CC
.
AGC maximum gain control.
The value of the maximum gain is:
About 15.5 dB when pin 5 is at 0 V,
About 24 dB when pin 5 is open, and
About 31 dB when pin 5 is at 5 V.
Charge/discharge capacitor used for post-CDS OPB clamping. We
recommend a value of 0.1 μF for this capacitor.
Continued on next page.
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