DS90UB964-Q1: DS90UB964-Q1 EVM trace length

Lucy Lee

Prodigy 110 points

Part Number: DS90UB964-Q1

Tool/software:

Hi,

What are the trace lengths of RIN0~RIN3 of EVM?

4 months ago

0 Justin Phan 4 months ago

TI__Mastermind 28530 points

Hello Lucy,

The trace lengths are roughly:

RIN0+ - 480.274mil

RIN1+ - 455.038mil

RIN2+ - 443.943mil

RIN3+ - 445.032mil

However, keep in mind that customers must design their high-speed transmission channel to be within the IL/RL loss limits defined in the datasheets. Loss depends on the layout and the PCB material used. Depending on these factors, customers may be more limited to use shorter PCB traces, depending on their PCB stack-up.

Best,

Justin Phan

0 Lucy Lee 4 months ago in reply to Justin Phan

Prodigy 110 points

Hello Justin,

Thanks for your reply!

In addition to the trace length of RIN0~RIN3, what is the trace length from the ac capacitor to CN1~CN3? I want to know the total length?
What material is the EVM board made of?

0 Justin Phan 4 months ago in reply to Lucy Lee

TI__Mastermind 28530 points

Hello Lucy,

The lengths listed above were the total sum of the RIN traces before and after the AC coupling capacitors.

The EVM board uses an FR-4 High Tg material

Best,

Justin Phan

0 Lucy Lee 4 months ago in reply to Justin Phan

Prodigy 110 points

Hello Justin,

Is it the total length from the IC side to the CN connector component?

+1 Justin Phan 4 months ago in reply to Lucy Lee

TI__Mastermind 28530 points

Hello Lucy,

Yes. I added the trace length from IC to AC Cap and the trace length from AC Cap to the connector.

Best,

Justin Phan

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DS90UB964-Q1: DS90UB964-Q1 EVM trace length