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LM1212N データシート(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部品番号 LM1212N
部品情報  230 MHz Video Amplifier System with OSD Blanking
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メーカー  NSC [National Semiconductor (TI)]
ホームページ  http://www.national.com
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TLH12354
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 04V 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
(fb3dB e 230 MHz at VO e 4VPP)
Y
tr tf e 15 ns at VO e 4VPP
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
(g3 dB range)
Y
Ouput blanked to k 04V for OSD window
Y
Easy to parallel three LM1212s for optimum color
tracking in RGB systems
Y
Output stage clamps to 065V 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
TLH12354 – 1
Order Number LM1212N
See NS Package Number N20A
C1996 National Semiconductor Corporation
RRD-B30M86Printed in U S A
http
www nationalcom


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