TINA/Spice/DS90UB934-Q1: DS90UB934-Q1 IBIS model

Eric Mitchell

Part Number: DS90UB934-Q1
Other Parts Discussed in Thread: TINA-TI

Tool/software: TINA-TI or Spice Models

Hello EFL team,

My customer got the iBIS model for the 934 off the TI website and something seems wrong. When they ran the simulation they found that there was some delay in the transition for the fast model (see below). Can you help explain this? Also, the standard load for “csi_1p8” model is as described in the snippet below which seems inconsistent with the datasheet (says Cref is 8pF). What is the correct standard load parameters (Cref and Rref) that should be in this model?

Thanks

Eric Mitchell

over 8 years ago

0 Davor Glisic over 8 years ago

TI__Expert 8165 points

Eric,

I don't see the snippet. You may need to put it into a zip file and then insert it into the post.

Regards,
Davor

0 Eric Mitchell over 8 years ago in reply to Davor Glisic

TI__Intellectual 905 points

Sorry about that. I've attached it here for you.

0 Eric Mitchell over 8 years ago in reply to Eric Mitchell

TI__Intellectual 905 points

EFL team,

I attached the picture, can you please get back to us on this customer issue?

Thanks,

Eric

0 Davor Glisic over 8 years ago in reply to Eric Mitchell

TI__Expert 8165 points

Hi Eric,

I have forwarded the concern to the ibis modeling team. I will update you once I hear from them.

Regards,
Davor

0 Davor Glisic over 8 years ago in reply to Davor Glisic

TI__Expert 8165 points

Hi Eric,

Per offline emails, the conclusion is that the issues you have reported requires an update to the ibis model. We have asked the modeling team to address the issue and upload the corrected model to the web. It may take 2-3 week before the updated model becomes available on the web.

Regards,
Davor

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TINA/Spice/DS90UB934-Q1: DS90UB934-Q1 IBIS model