AFE2256: Question Regarding AFE2256 LVDS Routing

gao yanrui

Part Number: AFE2256

Dear TI Support Team,

We purchased an AFE2256EVM board. After reviewing the available documentation and PCB files, we have the following questions regarding the three LVDS channels. Could you please help confirm the following points?

It appears that the LVDS routing crosses a split plane. Could you please explain the reason for this design choice? In general, crossing a split plane may affect impedance continuity and signal integrity.
For the LVDS routing, which ground reference should be used: analog ground or digital ground?
The PCB file provided by TI seems to be incomplete, and many traces appear to be unfinished. Could you please provide the final PCB file in AD18 format?

Thank you very much for your support.

10 天前

0 FRANK1 10 天前

TI__Genius 16270 points

Thank you for contacting TI China E2E forum and choosing our products as part of your solution.
Regarding your query, please give us some time to confirm this issue.

0 FRANK1 10 天前

TI__Genius 16270 points

After check the AFE2256 product page, the device AFE2256 design information is under NDA, we do not discuss these design issue in the official forum.

Please request Full data sheet and other design resources are available under NDA.

https://www.ti.com/drr/opn/AFE2256EVM-DESIGN

0 gao yanrui 9 天前回复 FRANK1

Prodigy 30 points

Dear TI Support Team,

Our company has signed a formal Non-Disclosure Agreement (NDA) with Texas Instruments. As confidential technical content is not allowed to be discussed on the public E2E forum, we would like to confirm whether subsequent technical communications can be carried out via private email.

If email communication is acceptable, please provide your corresponding support mailbox address, and we will send all relevant technical questions and details to your email promptly.

Thank you for your support.