DP83867IR: Crystal Specifications

Akihisa Tamazaki

Part Number: DP83867IR

Hello team,

My customer would like to know Crystal Specifications of 25MHz for XI input.
He understand that the tolerance +/-50ppm is important as below Table. But he is concern about jitter of Crystal Specifications. Should he care about the jitter performance of the crystal?

Your advice is appreciated.

Best Regards,
Akihisa Tamazaki

over 2 years ago

0 Rahul over 2 years ago

TI__Expert 8721 points

Hi Akihisa-san,

Please recommend customer to follow the crystal specifications mentioned in the datasheet. Customer have to work with crystal vendor to tune the crystal for jitter and ppm requirement specs by changing the load capacitor values.

Once all these above steps are followed, no issue should be noticed.

Regards,
Rahul

0 Akihisa Tamazaki over 2 years ago in reply to Rahul

TI__Genius 12430 points

Rahul-san,

Thank you for your comment.
You commented that "Customer have to work with crystal vendor to tune the crystal for jitter and ppm requirement specs by changing the load capacitor values."
Are there any target jitter for DP83867IR? This is the question of the customer.

Your advice is appreciated.

Best Regards,
Akihisa Tamazaki

+1 Rahul over 2 years ago in reply to Akihisa Tamazaki

TI__Expert 8721 points

Akihisa san,

we have jitter specs for oscillator:

Found this from the DP83867 troubleshooting guide:
https://www.ti.com/lit/an/snla246b/snla246b.pdf?ts=1686589619072&ref_url=https%253A%252F%252Fwww.google.com%252F

Hope this helps.

Regards,
Rahul

0 Akihisa Tamazaki over 2 years ago in reply to Rahul

TI__Genius 12430 points

Rahul-san,

Thank you for your comment.
I understand. I did see the only "25-MHz Crystal Specifications" and I missed "25-MHz Oscillator Specifications".
I appreciated that you shared DP83867 troubleshooting guide with me.

Best Regards,
Akihisa Tamazaki

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DP83867IR: Crystal Specifications