1205 / LM1205N / LM1205 video amplifier circuit

1205 / LM1205N / LM1205 video amplifier circuit

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130 MHz RGB Video Amplifier System with Blanking
The LM1205 is a very high frequency video amplifier system intended for use in high resolution RGB monitor applications.
In addition to the three matched video amplifiers, the LM1205 contains three gated single ended input black level clamp comparators for brightness control, three matched DC controlled attenuators for contrast control, and three DC controlled sub-contrast attenuators providing gain trim capability for white balance. All DC control inputs offer high input impedance and an operation range from 0V to 4V for easy interface to bus controlled alignment systems. The LM1205 also contains a blanking circuit which clamps the video output voltage during blanking to within 0.1V of ground. This feature provides blanking capability at the cathode of the CRT.
Three wideband video amplifiers 130 MHz @ b3 dB (4 VPP output)
Matched (g0.1 dB or 1.2%) attenuators for contrast control
Three externally gated single ended input comparators for cutoff and brightness control
Provisions for individual gain control (Drive) of each video amplifier
0V to 4V, high input impedance DC contrast control (l40 dB range)
0V to 4V, high input impedance DC drive control (g3 dB range)
Capable of 7 VPP output swing (slight reduction in bandwidth)
Output stage directly drives most hybrid or discrete CRT drivers
High resolution RGB CRT monitors
Wideband amplifiers with gain and DC offset controls
Interface amplifiers for LCD or CCD systems
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