To be a bit more precise, I'd probably group them this way:
Medium speed / lowest cost:
370HR
NP175
Higher speed / moderately lower cost:
N4000-13
FR408HR
As someone else also mentioned, FR408HR would probably be an excellent
choice.
Chuck Corley
National Instruments
On 2017-02-21 22:25, Chuck Corley wrote:
Many people who will be implementing PCIe 4.0 will be doing it for PCs
or for markets that want to minimize cost so I would suggest looking at
something on the less expensive end of the spectrum like FR408HR or
370HR or NP175. All 3 of these are moderately lower loss and less
expensive.
Chuck Corley
National Instruments
On 2017-02-21 17:11, Gary Giust wrote:
Hi, I'm designing a test board to evaluate reference clocks for PCIe 4.0
market. The standard calls for a 12" differential 100 Ohm trace, but I
don't think it specifies the PCB material (FR4, Rogers, Tachyon,
Nelco-13, Megtron-6, etc.) to use.
Since I have to pick a material, I'm looking for recommendations which
one would be realistic (although perhaps on the pessimistic side) for
actual PCIe 4 designs. I want to avoid picking a material that is
clearly too high loss, or too low loss, compared to what may actually be
used.
Any recommendations?
Best regards, Gary
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