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AN-1240 Video Transmission Over Twisted Pair Wire (Rev. C)

 

The circuits in Figure 1 and Figure 2 transmit NTSC video signals over twisted pair wire. They were designed and tested for transmitting video on inexpensive CAT-3 twisted pair wire. Even when transmitting on 1000 feet of wire, good quality color video was displayed on a monitor with an NTSC input. Both the transmit and receive circuits use the LMH6643 dual op-amp that has the proper bandwidth and slew rate for this application.