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參數(shù)資料
| 型號(hào)： | M52722 |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | 3-CHANNEL VIDEO PREAMPLIFIER PROVIDED WITH OSD MIX AND RETRACE LINE BLK FOR HIGH-RESOLUTION |
| 中文描述： | 3通道視頻前置放大器帶OSD提供的混合并回朔線座的高分辨率 |
| 文件頁(yè)數(shù)： | 16/17頁(yè) |
| 文件大?。?/td> | 125K |
| 代理商： | M52722 |
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MITSUBISHI ICs (Monitor)
M52722SP
3-CHANNEL VIDEO PREAMPLIFIER PROVIDED WITH OSD MIX
AND RETRACE LINE BLK FOR HIGH-RESOLUTION
16
M52722SP
-
INSTRUCTIONS FOR USE
1) Clamping pulse input
Input positive polarity pulse.
Clamping pulse threshold voltage VTH is calculated by the
following equation, and voltages more than 2.2 V is subject
toLIM:
VTH = 2.2 V- Diode
X
1
= 1.5V
Recommended clamping pulse voltage is as given in the
following
diagram:
In addition, pulse width is recommended as follows:
More than 1.0
μ
sec at 15kHz,
More than 0.5
μ
sec at 30kHz, and
More than 0.3
μ
sec at 64kHz.
Clamping pulse wiring generally involves long stretched lines in
the set, is made from the high pressure side, and often
connected indirectly to external pins, causing strong surge input
to tend to come into. Under such circumstances, protective
circuit as given in the following diagram is recommended:
2) Brightness operation
The above diagram represents its principle.
2-1) Brightness pins
Use within the range of 1V to 5V.
Control characteristics are as given in the following drawing:
2-2) Sub-brightness
This IC has no sub-brightness function.
2-3) Capacitance value of holding capacitor
Value necessary as IC is more than 0.01é
(when fH=15kHz).
However, this depends upon hold period (time other than for
clamping), and the longer the hold time is, the greater the
value is necessary.
In terms of application, the smaller the capacitance value, the
quicker the response, and the greater the capacitance value,
the more stable the behavior.
Accordingly, set freely depending upon signals and clamping
pulse contents (especially pulse status in a vertically
synchronized timing).
3) BLK (for OSD) and OSD input pins
Input formula is on an open basis.
(See page 2-1109.)Threshold voltage is 2.5V.
Inputting OSD mix signal without inputting BLK pulse will cause
abnormal operation. Input BLK pulse as well whenever inputting
OSD Mix signal.
Ensure that input pin is grounded when OSD Mix function is not
used.
VTH(1.5V)
2.5V to 5.0V
0V
18
19
+
-
+
-
Signal
DC level shift
Brightness
(1 to 5V)
0
1
2
3
4
5
6
1
2
3
4
5
O
Brightness voltage (V)
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| M52722SP | 3-CHANNEL VIDEO PREAMPLIFIER PROVIDED WITH OSD MIX AND RETRACE LINE BLK FOR HIGH-RESOLUTION |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M52722SP | 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:3-CHANNEL VIDEO PREAMPLIFIER PROVIDED WITH OSD MIX AND RETRACE LINE BLK FOR HIGH-RESOLUTION |
| M52723ASP | 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:Dynamic Focus |
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