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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

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However, it is not as good as parallel termination.

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In which regard? For LVTTL/LVCMOS outputs, parallel termination can't be used. Calibration resistors rup and rdn would be needed with calibrated termination only.