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ADV7125 video output DC protection

Question asked by dim.nvt on Jan 31, 2013
Latest reply on Feb 1, 2013 by GuenterL


On one of our devices used in automotive environment we need to protect the video outputs from potentially incoming DC voltage. As we realized (too late), with wrong customer there is a minor chance to put +12v to DAC output lines, particularly to red and green channels. According to Murphy's laws, we immediately received 2 burned devices in a couple of weeks since production. We would like to know if a simple solution, like decoupling capacitors could be used in this case. If so, which value/type we should use? Thank you!