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National Semiconductor - 230 MHz Video Amplifier System

Numéro de référence LM2202
Description 230 MHz Video Amplifier System
Fabricant National Semiconductor 
Logo National Semiconductor 





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LM2202 fiche technique
April 1999
LM2202
230 MHz Video Amplifier System
General Description
The LM2202 is a very high frequency video amplifier system
intended for use in high resolution monochrome or RGB
color monitor applications. In addition to the wideband video
amplifier the LM2202 contains a gated differential input black
level clamp comparator for brightness control, a DC con-
trolled attenuator for contrast control and a DC controlled
sub contrast attenuator for drive control. The DC control for
the contrast attenuator is pinned out separately to provide a
more accurate control system for RGB color monitor applica-
tions. All DC controls offer a high input impedance and oper-
ate over a 0V to 4V range for easy interface to bus controlled
alignment systems. The LM2202 operates from a nominal
12V supply but can be operated with supply voltages down
to 8V for applications that require reduced IC package power
dissipation characteristics.
Features
n Wideband video amplifier
(f−3dB = 230 MHz at VO = 4 VPP)
n tr, tf = 1.5 ns at VO = 4 VPP
n Externally gated comparator for brightness control
n 0V to 4V high input impedance DC contrast control
(>40 dB range)
n 0V to 4V high input impedance DC drive control
(±3 dB range)
n Easy to parallel three LM2202s for optimum color
tracking in RGB systems
n Output stage clamps to 0.65V and provides up to 9V
output voltage swing
n Output stage directly drives most hybrid or discrete CRT
amplifier stages
n Replacement for the LM1202
Applications
n High resolution CRT monitors
n Video switches
n Video AGC amplifier
n Wideband amplifier with gain and DC offset control
Block and Connection Diagram
Order Number LM2202N or LM2202M
See NS Package Number N20A or M20B
© 1999 National Semiconductor Corporation DS012591
DS012591-1
www.national.com

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