Electronics > Beginners

Video distribution amplifier



can anyone propose me a simple way/circuit to amplify a CVBS video signal (i think normal 75R from RCA jack) so that i can split it to a disassembled chinese video TFT module (i think those must have termination resistors) and to a character insertor device i built with a PIC so that the signal will not become weaker when splitted and thus degraded.


Although I'm not an expert, what you need is one (or more) buffer(s) working up to some MHz. Among the opamps there are some specifically designed for video applications. I think the best way should be to use two opamps connected to the terminated input, each with its output resistance added.
Take a look here, maybe you can find some typical circuits and can order samples, too.


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