LM1205130 MHz RGB Video Amplifier System with BlankingGeneral Des criptionThe LM1205 is a very high frequency video amplifier systemintended for use in high resolution RGB monitor applications.In addition to the three matched video amplifiers, theLM1205 contains three gated single ended input black levelclamp comparators for brightness control, three matchedDC controlled attenuators for contrast control, and three DCcontrolled sub-contrast attenuators providing gain trim capabilityfor white balance. All DC control inputs offer highinput impedance and an operation range from 0V to 4V foreasy interface to bus controlled alignment systems. TheLM1205 also contains a blanking circuit which clamps thevideo output voltage during blanking to within 0.1V ofground. This feature provides blanking capability at thecathode of the CRT.FeaturesY Three wideband video amplifiers 130 MHz @ b3 dB(4 VPP output)Y Matched (g0.1 dB or 1.2%) attenuators for contrastcontrolY Three externally gated single ended input comparatorsfor cutoff and brightness controlY Provisions for individual gain control (Drive) of eachvideo amplifierY 0V to 4V, high input impedance DC contrast control(l40 dB range)Y 0V to 4V, high input impedance DC drive control(g3 dB range)Y Capable of 7 VPP output swing (slight reduction inbandwidth)Y Output stage blankingY Output stage directly drives most hybrid or discreteCRT driversApplicationsY High resolution RGB CRT monitorsY Video AGC amplifiersY Wideband amplifiers with gain and DC offset controlsY Interface amplifiers for LCD or CCD systems