In Baluns

I got an email asking if our baluns would work to 16 Gb/s data signals, so I tested them with the fastest data signal we can generate here before our BERT starts to go loopy. Here are the results:

Input:

14 gbps inNon-inverted output:

14 gbps outInverted Output:

14 gbps out invertedSo there you go, the connectorized baluns are suitable for datarates up to at least 14 Gb/s without significant data degradation.

 

 

 

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Showing 2 comments
  • Michael
    Reply

    Do you have a more detailed report on this? Amplitudes? Jitter? Rise time degradation? We have a 14Gb application that could benefit from these

    • Doug Jorgesen
      Reply

      Mike,

      The amplitude should be reduced by the insertion loss (around 6 dB) with a slight (1 dB) roll-off for higher frequencies. This will slightly low pass filter the rising/falling edges. There should be no additive jitter, since it is a passive device and doesn’t do any retiming. The differential group delay between the two arms is also very small, as indicated by the phase balance being below 5 degrees.
      Another option is to use our new 26 or 36 GHz baluns, which have guaranteed performance up to 40 Gb/s datarates.

      Doug

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