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參數(shù)資料
| 型號： | LM1236 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 150 MHz I2C Compatible RGB Preamplifier with Internal 254 Character OSD ROM, 512 Character RAM and 4 DACs |
| 中文描述： | 150 MHz的I2C兼容的RGB前置放大器254字符OSD光盤，512個字符RAM和4 DAC的內(nèi)置 |
| 文件頁數(shù)： | 7/43頁 |
| 文件大?。?/td> | 1898K |
| 代理商： | LM1236 |
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Compatibility with LM1237 and LM1247
(Continued)
TABLE 2. LM1253A/LM1237 Compatibility
DAC Bias Outputs
DAC 2
Green
LM1236 Pin:
Assignment:
DAC 1
Blue
DAC 3
Red
DAC 4
Brightness
OSD vs Video Intensity
The OSD amplitude has been increased over the LM1237
level. During monitor alignment, the three gain registers are
used to achieve the desired front of screen color balance.
This also causes the OSD channels to be adjusted accord-
ingly, since these are inserted into the video channels prior
to the gain attenuators. This provides the means to fine tune
the intensity of the OSD relative to the video as follows. If a
typical starting point for the alignment is to have the gains at
maximum (0x7F) and the contrast at 0x55, the resultant
OSD intensity will be higher than if the starting point is with
the gains at 0x55 and the contrast at maximum (0x7F). This
tradeoff allows fine tuning the final OSD intensity relative to
the video. In addition, the OSD contrast register, 0x8438
[4:3], provides 4 major increments of intensity. Together,
these allow setting the OSD intensity to the most pleasing
level.
ESD Protection
The LM1236 features a 3.0 kV ESD protection level (see
(Notes 4, 13)). This is provided by special internal circuitry
which activates when the voltage at any pin goes beyond the
supply rails by a preset amount.At that time, the protection is
applied to all the pins, including SDA and SCL.
L
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| LM1236AAA/NA | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:150 MHz I2C Compatible RGB Preamplifier with Internal 254 Character OSD ROM, 512 Character RAM and 4 DACs |
| LM1237 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:150 MHz I2C Compatible RGB Preamplifier with Internal 254 Character OSD and 4 DACs |
| LM1237_04 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:150 MHz I2C Compatible RGB Preamplifier with Internal 254 Character OSD and 4 DACs |
| LM1237AAF/NA | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:150 MHz I2C Compatible RGB Preamplifier with Internal 254 Character OSD and 4 DACs |
| LM1237BAAF/NA | 功能描述:IC PREAMP CMOS 150MHZ 24-DIP RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標準包裝:3,000 系列:OMNITUNE™ 類型:調(diào)諧器 應(yīng)用:移動電話，手機，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應(yīng)商設(shè)備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064 |
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