LM15851EVM: the LM15851 placement

vic zap

Intellectual 740 points

Part Number: LM15851EVM

Hi!

Can you tell me please, why did you place the LM15851 on the opposite side of the board?

Thanks in advance!

Best regards, Vic.

over 5 years ago

0 Jim Brinkhurst1 over 5 years ago

TI__Mastermind 43860 points

Hi Vic
This was done to provide the best routing from the LM15851 JESD204B data output terminals to the matching signal locations on the FMC connector.
If the LM15851 is on the top side of the board all of the signal pairs need to cross over each-other. This causes more complex signal routing, adding vias etc. which could potentially degrade the high speed serial data signals.
Best regards,
Jim B

0 vic zap over 5 years ago in reply to Jim Brinkhurst1

Intellectual 740 points

Thanks a lot, Jim, for the fast reply!
Best regards,
Vic.

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LM15851EVM: the LM15851 placement