In AD8192, I can set 0, +2, +4 and +6 dB with the Pre-emphasized function.
Could you please explain about specifically this function?
Does this function only change current value?
The AD8192 pre-emphasis function is a two-tap FIR filter that creates a boosted output waveform to pre-compensate for lossy interconnect on the output of the AD8192.
This function does increase the output current to create the increased output swing.
Thank you for your answer.
Can I ask you one more question ?
Scan converter sometimes appear below when we set 0db with pre-emphasized function. 1: Sync error 2: displayed image is repeated every 2 dot
Above issue is improved when we set +4 or 6DB.
If you know above issue or you know the method to avoid above issue,please let me know it.
I would speculate that the pcb or cable after the AD8192 has substantial insertion loss and the added boost of the AD8192 is helping to compensate.
Can you provide a block diagram of your system/setup?
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