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參數(shù)資料
| 型號： | IR3Y30M |
| 廠商： | Sharp Corporation |
| 英文描述： | CCD Signal Processors for B/W CCD Cameras |
| 中文描述： | CCD信號處理器對B /黑白CCD相機(jī) |
| 文件頁數(shù)： | 13/22頁 |
| 文件大小： | 188K |
| 代理商： | IR3Y30M |
FUNCTIONAL OPERATION
CDS Circuit
The feed-through level of the input signal is
clamped by the clamp circuit. Then the signal
period is sampled and other periods are held by the
sample and hold circuit, so that signals can be
obtained.
Highlight Clip Circuit
Before the AGC circuit, excessive signals of more
than approximately 0.5 Vp-p are clipped.
AGC Amplifier Circuit
The amplitude of output signals from the AGC
amplifier is externally detected and the gain is
controlled with control signals from the AGC
operational amplifier. Decreasing voltage at pin 41
to 0.62 V or less causes the amplifier to be fixed to
0 dB.
LPF Circuit
The characteristics can be controlled with an
external resistor at pin 35. Increasing the resistor to
220 k$ or more allows signals passing over the
LPF to be output.
Gamma and Knee Corrections Circuits
In order to comply with the characteristics of CRT,
the high-bright part is suppressed. Pin 29 and 30
can be used to control this suppression. If voltage
at pin 30 is increased to 4 V or more gamma will
be 1.
Exposure Circuit
Signals which have not been processed by AGC
are amplified, suppressed by gamma correction,
and then output. Control signals can be generated
by inputting the above signals to pin 10 after
detecting them.
Aperture Circuit
The video articulation can be increased by
enhancing the signal contour. If the built-in delay
line is not used, it can be turned off by using an
external resistor of minimum 200 k$ at pin 27.
To control the aperture amount, use a base clip.
Output Circuit
A load of 75 $ can be driven directly. In addition,
the pedestal level can be controlled vertically.
CAUTIONS
To control the aperture amount, apply base clip by
controlling pin 15.
Avoid connecting or disconnecting an external resistor at
pin 27 to prevent the malfunction of the built-in delay line.
Use the shortest possible distance to connect the bypass
capacitors between the power supply and GND pins. The
addition or removal of any external component should be
determined by how the existing components are mounted.
This device is electronically sensitive. Handle only at
electrostatically safe work stations.
Gamma Output
Aperture Signal
AMP
2
Output
CCD Signal
FCDS
FS
CDS OUT
IR3Y30M/M1
13
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