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Video Encoder Replacement for ADV7391

Hi Since ADV7391 is now NRND, what video dac can I use for Composite output? Goal is 768 × 576 sq pixel mode (close to 800 x 600). 1 output.

Can I use a simple solution like AD9708 with video buffer amp like ADA4430 to achieve my 75 Ohm composite from FPGA? Is there application note showing this? - Patrick