DS90UB947-Q1: Inline capacitor value correlation to data rates in FPD-Link devices

Katharina Ehmke

Prodigy 320 points

Part Number: DS90UB947-Q1

Tool/software:

Hi team,

my customer noted this circumstance in the data sheet of DS90UB947-Q1, page 67.

This can also be observed e.g. in the DS of 948 Device.

How come, that with increased data rate the inline capacitance decreases? What technical correlation is behind this? Expectation would be with increased data rate meaning also higher frequencies, the capacitance would at least stay the same.

Thanks for enlightening us!

BR, Katharina

3 months ago

0 Nikolas Antonucci 3 months ago

TI__Mastermind 21485 points

Hi Katharina,

I will need to look into the history of this comment some more. Will let you know directly on this thread once I have an update.

In the meantime, can you please let me know who is the tier 1 and OEM? And what is the relation to the linked thread above?
Best,

Nikolas

0 Katharina Ehmke 3 months ago in reply to Nikolas Antonucci

TI__Prodigy 320 points

Hi Nikolas,

this request is not related to any concrete project, Tier1 is BHTC in Germany. The link to the other thread is that over this debugging issue this question arised but more in a general kind of nature.

Thanks,

Katharina

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DS90UB947-Q1: Inline capacitor value correlation to data rates in FPD-Link devices