LMK03328: LMK03328 IBIS FILE

amnon pomerants

Part Number: LMK03328

Hello

I am using the LMK03328 IBIS FILE downloaded from your site (lmk033x8.ibs, IBIS_ver=4.1, File_Rev=1.3, Data -07-25-2017)

Seems to me as if the POS output pins (OUTx_P) in LVDS mode , LMK03328RHS, are generating a faulty signal

I found out same problematic signal both in Pre (two LMK03328RHS, one is connected to the other) and Post Layout simulations

Can you ask please one of your IBIS experts to take a look at this file and verify the functionality of the LVDS OUT POS pin ??

Thanks

Amnon

over 5 years ago

0 Amin Eshraghi over 5 years ago

TI__Expert 6140 points

Hi Amnon,

I will look into this and provide feedback, it may take a few days.

Thanks and regards, Amin

0 Amin Eshraghi over 5 years ago in reply to Amin Eshraghi

TI__Expert 6140 points

Hi Amnon,

Have you had issues if only one LMK03328 is used?

Regards,

Amin

0 amnon pomerants over 5 years ago in reply to Amin Eshraghi

Intellectual 780 points

0 amnon pomerants over 5 years ago in reply to Amin Eshraghi

Intellectual 780 points

Hello Amin

I have uploaded two screen capture pages from the HyperLynx system, where I connected the LMK03328 to a clock distributer. Please note the difference between the high amplitude signal at the LMK Neg output (u1 pin 15) and the very low signal at the LMK Pos pin (U1 pin 14).

These results were about the same when connecting one LMK output to another LMK input .

However, when using only the clock distributor, connecting one chip output to another chip input, the problem is gone and the waves became symmetrical.

It seems to as this quite proves the problem is with the LMK, probably at its Neg pin signal amplitude

I hope the attached pictures helps to understand my issue.

Thanks

Amnon

0 Amin Eshraghi over 5 years ago in reply to amnon pomerants

TI__Expert 6140 points

Hi Amnon,

Yes, we'll be looking into this and providing feedback. If you'd like to share your exact file, you can go ahead and do that as well.

Thanks and regards, Amin

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LMK03328: LMK03328 IBIS FILE