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| 型號(hào)： | LM1212 |
| 文件頁(yè)數(shù)： | 1/18頁(yè) |
| 文件大小： | 285K |
| 代理商： | LM1212 |
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TL/H/12354
L
August 1996
LM1212
230 MHz Video Amplifier System with OSD Blanking
General Description
The LM1212 is a very high frequency video amplifier system
intended for use in high resolution monochrome or RGB
color monitor applications with OSD. In addition to the wide-
band video amplifier the LM1212 contains a gated differen-
tial input black level clamp comparator for brightness con-
trol, a DC controlled attenuator for contrast control and a
DC controlled sub contrast attenuator for drive control. The
DC control for the contrast attenuator is pinned out sepa-
rately to provide a more accurate control system for RGB
color monitor applications. All DC controls offer a high input
impedance and operate over a 0V–4V range for easy inter-
face to bus controlled alignment systems. During the OSD
window, the output is blanked to
k
0.4V. The LM1212 oper-
ates from a nominal 12V supply but can be operated with
supply voltages down to 8V for applications that require re-
duced IC package power dissipation characteristics.
Features
Y
Wideband video amplifier
(f
b
3 dB
e
230 MHz at V
O
e
4 V
PP
)
Y
t
r
, t
f
e
1.5 ns at V
O
e
4 V
PP
Y
Externally gated comparator for brightness control
Y
0V to 4V high input impedance DC contrast control
(
l
40 dB range)
Y
0V to 4V high input impedance DC drive control
(
g
3 dB range)
Y
Ouput blanked to
k
0.4V for OSD window
Y
Easy to parallel three LM1212s for optimum color
tracking in RGB systems
Y
Output stage clamps to 0.65V and provides up to 9V
output voltage swing
Y
Output stage directly drives most hybrid or discrete
CRT amplifier stages
Applications
Y
High resolution CRT monitors with OSD
Y
Video switches
Y
Video AGC amplifier
Y
Wideband amplifier with gain and DC offset control
Block and Connection Diagram
TL/H/12354–1
Order Number LM1212N
See NS Package Number N20A
C
1996 National Semiconductor Corporation
RRD-B30M86/Printed in U. S. A.
http://www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM1212N | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:230 MHz Video Amplifier System with OSD Blanking |
| LM121AH/883 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LM221/LM321 Precision Preamplifiers |
| LM121H WAF | 制造商:Texas Instruments 功能描述: |
| LM121H/883 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LM221/LM321 Precision Preamplifiers |
| LM121-S | 功能描述:基本/快動(dòng)開(kāi)關(guān) Foot Switch RoHS:否 制造商:Omron Electronics 觸點(diǎn)形式:SPDT 執(zhí)行器:Lever 電流額定值:5 A 電壓額定值 AC:250 V 電壓額定值 DC:30 V 功率額定值: 工作力:120 g IP 等級(jí):IP 67 NEMA 額定值: 端接類型:Wire 安裝:Panel |
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