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Smearing problem when use ADA4858-3 driving and equalizing a 100M VGA cable

Question asked by Jane on Apr 10, 2014
Latest reply on Apr 16, 2014 by Jane

Dear Sir,
I am working on ADA4858-3 and I am facing some technical issue.

I designed Amplifier Driver using ADA4858-3 driving and equalizing a 100M VGA Cable ,based the application note written by an ADI application engineer via below link. Please check the attached schematic for my design.

http://www.analog.com/library/analogdialogue/archives/44-07/vga_driver.html

I have serious smearing problem in the VGA output image even worse than the situation without  this ADA4858-3 driver circuit.

Would you please help to check and give some professional advice?

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