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Originally Posted by Darius
I am not sure understanding your power supply. The -5V is not stabilized?
(+5V -6V3)
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The power supply is designed to run from a single rail stabilised supply.
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Originally Posted by Darius
"Video op-amps are the way forward; component count comes down, performance improves and designing the thing gets a whole lot easier"
I don't agree. And I want the sync tips on 0V !
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In my new design, I can put the sync tips wherever I like (within reason) by a simple trimmer, I can also vary the proportion of sync and video, as required by some other standards. Using video op-amps made this flexibility very easy to achieve.
Unfortunatly, this is on hold at the moment.
Jim.