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參數(shù)資料
| 型號： | LM1253A |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Monolithic Triple 180 MHz I2C CRT Pre-amp With Integrated Analog On Screen Display (OSD) Generator |
| 中文描述： | 單片三180兆赫的I2C顯像管預(yù)先集成在屏幕顯示（OSD）發(fā)生器模擬放大器 |
| 文件頁數(shù)： | 18/57頁 |
| 文件大?。?/td> | 1621K |
| 代理商： | LM1253A |
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Pre-Amp Functional Description
(Continued)
TABLE 2. Registers Controlling the Output Video and Clamp Signal
Parameter
BGAIN
GGAIN
RGAIN
CONTRAST
BBIAS
GBIAS
RBIAS
BRIGHTNESS
PEDESTAL
OSD
CONTRAST
DC OFFSET
Address
8430h
8431h
8432h
8433h
8434h
8435h
8436h
8437h
8438h Bits 7–5
8438h Bits 4–3
Size
7 Bit
7 Bit
7 Bit
7 Bit
8 Bit
8 Bit
8 Bit
8 Bit
3 Bit
2 Bit
Description
Default
60h
60h
60h
60h
80h
80h
80h
80h
4h
2h
Blue Channel Gain
Green Channel Gain
Red Channel Gain
Overall Gain of All Three Channels
Blue Bias Clamp Pulse Amplitude
Green Bias Clamp Pulse Amplitude
Red Bias Clamp Pulse Amplitude
Amplitude of Brightness Clamp Pulse of All 3 Channels
Offset to the Brightness Control
OSD Gain
8438h Bits 2–0
3 Bit
Active Video DC Offset of All 3 Channels
4h
An active horizontal blanking signal is added to the video at
the output, giving excellent smear performance, and pre-
venting video content dependent DC bias offsets as a result
of high frequency over shoot.
The outputs are referenced to a DC level (V
) produced by
the LM1253A preamp, and so are guaranteed to provide
stable DC operating levels within the system without the
need for additional external feedback components.
DS101265-31
FIGURE 28. Register Control of the Output Video and Clamp Signal
L
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM1253AN | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Monolithic Triple 180 MHz I2C CRT Pre-amp With Integrated Analog On Screen Display (OSD) Generator |
| LM-1256 | 制造商:ROHM 制造商全稱:Rohm 功能描述:16 x 16 matrix displays |
| LM-1256_1 | 制造商:ROHM 制造商全稱:Rohm 功能描述:16】16 matrix displays |
| LM-1256LB1 | 制造商:ROHM 制造商全稱:Rohm 功能描述:16】16 matrix displays |
| LM125AN | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:VOLTAGE REGULATORS |
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