參數(shù)資料
型號(hào)： 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(jī)信號(hào)處理芯片)
中文描述： 單芯片黑白CCD攝像機(jī)信號(hào)處理集成電路（單片黑白防治荒漠化公約照相機(jī)信號(hào)處理芯片）
文件頁(yè)數(shù)： 16/24頁(yè)
文件大?。?/td> 355K
代理商： LA7265W
Continued from preceding page.
Unit (resistance:
), I: input, O: output, B: I/O, P: power supply
Function
No. 4850-16/24
LA7265W
Continued on next page.
Pin No.
Symbol
I/O
Equivalent circuit
32
33
34
35
36
DRIVE-V
CC
IRIS-OUT
IRIS. WIN
AGC. WIN
LSP
P
O
I
I
I
75
driver system V
CC
. Since the current variations in this system
are large, care must be taken to prevent this system from influencing
other power supplies. Apply a 5 V potential and insert a capacitor of
about 0.1 μF between this pin and ground.
Iris control signal output. The signal that had pedestal added and
was white clipped is amplified by about 10 dB by the iris amplifier and
output from this pin.
Iris window pulse input. White clipping is applied to the signal that
had pedestal added (see the pin 39 description). The clipping level
changes depending on this pin's input state. (0 V
→
maximum,
open
→
typical, 5 V
→
minimum clipping levels) Iris windowing is
possible by inputting an iris window pulse signal that has three
values: 0 V, floating, and 5 V.
AGC window pulse input. The other signal that had OPB clamping
applied at pin 14 goes to the AGC detector system. First a pedestal
on the order of a few tens of mV is added using the blanking pulse
input from pin 39. Next, white clipping is applied. However, the clipping
level changes according to the state of this pin. (0 V
→
maximum,
open
→
typical, 5 V
→
minimum clipping levels) AGC backlighting
correction is possible by inputting an AGC window pulse signal that
has three values: 0 V, floating, and 5 V.
1H interpolation control pulse input. When 1H interpolation is used,
input an LSP pulse (
) that switches on each 1H to this pin. Pin
40 clamp pulse switching is performed by the LSP pulse. This circuit
also switches the OPB clamped original signal and the 1H delayed
signal. When 1H interpolation is not used, only the original signal is
OPB clamped and passed through this circuit.
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