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參數(shù)資料
| 型號： | LM1203BN |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | IC-VIDEO AMP SYSTEM |
| 中文描述： | 3 CHANNEL, VIDEO AMPLIFIER, PDIP28 |
| 封裝： | PLASTIC, DIP-28 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大?。?/td> | 559K |
| 代理商： | LM1203BN |
Additional Applications of the LM1203
Figure 9 shows how the LM1203 can be set up as a video
buffer which could be used in low cost video switcher appli-
cations. Pin 14 is tied high to turn off the clamp compara-
tors. The comparator input pins should be grounded as
shown. Sync tip (black level if sync is not included) clamping
is provided by diodes at the amplifier inputs. Note that the
clamp cap pins are tied to the Pin 11 2.4V reference. This
was done, along with the choice of 200
X
for the drive pin
resistor, to establish an optimum DC output voltage. The
contrast control (Pin 12) will provide the necessary gain or
attenuation required for channel balancing. Changing the
contrast control setting will cause minor DC shifts at the
amplifier output which will not be objectionable as the out-
put is AC coupled to the load. The dual NPN/PNP emitter
follower will provide a low impedance output drive to the AC
coupled 75
X
output impedance setting resistor. The dual
500
m
F capacitors will set the low frequency response to
approximately 4 Hz.
TL/H/9178–9
FIGURE 9. RGB Video Buffer with Diode Sync Tip Clamps and 75
X
Cable Driver
http://www.national.com
11
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM1203 | RGB Video Amplifier System |
| LM1203N | RGB Video Amplifier System |
| LM1209 | 130 MHz/100 MHz RGB Video Amplifier System with Blanking |
| LM1212N | 230 MHz Video Amplifier System with OSD Blanking |
| LM1229 | I2C Compatible CMOS TV RGB and Deflection Processor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM1203C | 制造商:TI 制造商全稱:Texas Instruments 功能描述:RGB VIDEO-AMPLIFIER SYSTEM |
| LM1203CN | 制造商:TI 制造商全稱:Texas Instruments 功能描述:RGB VIDEO-AMPLIFIER SYSTEM |
| LM1203FN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Triple Video Amplifier |
| LM1203N | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:RGB Video Amplifier System |
| LM1203-N | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LM1203 RGB Video Amplifier System |
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