Tool/software:
Hi,
Does anyone have the temperature coefficient of propagation delay for this differential PECL input dual differential PECL output part?
Nathan
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Tool/software:
Hi,
Does anyone have the temperature coefficient of propagation delay for this differential PECL input dual differential PECL output part?
Nathan
Nathan,
Unfortunately we do not have this data. But the typical propagation delay is around 350 ps and minimum delay is 280 ps. I hope this helps.
Regards,
Will
Hi William,
Are those numbers of 350ps typical and 280ps minimum over the full temperature range [-40C, 85C]?
I see that in the datasheet it also gives a maximum propagation delay of 450ps over full temperature range [-40C, 85C].
To try to put a bound on this, it would mean that the propagation delay TempCo is about (450ps -280ps)/(85C+40C) = 1.36ps/oC (this assumes the propagation delay changes linearly over the full range). Is this the right approach to make an estimate?
Nathan,
I was actually able to dig up the original characterization data that should give a more accurate approach.
At 3.3V the average propagation delay is:
-40C - 285ps
25C - 291ps
85C - 298ps
At 2.5V the average propagation delay is:
-40C - 289ps
25C - 295ps
85C - 303ps
This should be the best way to estimate the temperature coefficient.
Regards,
Will