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LM1205

National Semiconductor
Part Number LM1205
Manufacturer National Semiconductor
Description 130 MHz/85 MHz RGB Video Amplifier System with Blanking
Published Mar 22, 2005
Detailed Description LM1205 LM1207 130 MHz 85 MHz RGB Video Amplifier System with Blanking January 1996 LM1205 LM1207 130 MHz 85 MHz RGB Vi...
Datasheet PDF File LM1205 PDF File

LM1205
LM1205

Overview
LM1205 LM1207 130 MHz 85 MHz RGB Video Amplifier System with Blanking January 1996 LM1205 LM1207 130 MHz 85 MHz RGB Video Amplifier System with Blanking General Description The LM1205 LM1207 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 LM1207 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 LM1207 also contains a blanking circuit which clamps the video output voltage during blanking to within 0 1V above ground This feature provides blanking capability at the cathodes of the CRT A spot killer is provided for CRT phosphor protection during powerdown Y Y Y Y Y Y Y Three externally gated single ended input comparators for cutoff and brightness control 0V to 4V high input impedance DC contrast control (l40 dB range) 0V to 4V high input impedance DC drive control for each video amplifier (b6 dB to 0 dB range) Spot killer blanks output when VCC k 10 6V Capable of 7 VPP output swing (slight reduction in bandwidth) Output stage blanking Output stage directly drives most hybrid or discrete CRT drivers Applications Y Y Y Y Features Y Y High resolution RGB CRT monitors Video AGC amplifiers Wideband amplifiers with gain and DC offset controls Interface amplifiers for LCD or CCD systems Three wideband video amplifiers 130 MHz (LM1205) b 3 dB (4 VPP output) Matched ( g 0 1 dB or 1 2%) attenuators for contrast control Block and Connection Diagram TL H 11881 – 1 FIGURE 1 Order Number LM1205N or LM1207N See NS Package Number N28B C1996 National Semiconductor Corporation TL H 11881 RRD-B30M66 Printed ...


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