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Altera_Forum
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16 years ago

PLL outputs to drive 50 ohm loads

I need two outputs from a single PLL of CYCLONE-III 3C16. Both the outputs are single-ended. One of outputs is 100MHz and the other is 120MHz-200MHz which will be dynamically configured through NIOS-...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Thanks. I did consider using series termination. However, it is not as good as parallel termination. If Cyclone III series termination is used, 2 extra I/Os, rup and rdn will be used or 2 external resistors will be used.