ADC12DJ5200RF: ADC12DJ5200RF JESD0204 lines length matching requirement

Harshitha Reddy

Hi,

We are using x3 ADC12DJ5200 ADC and XCVU11P Devices in my design.

For JESD204 lanes, what is the maximum trace length difference allowed within One channel? Due to placement of ICs and Connections to GTY we are able to achieve half an inch Difference within one channel. Can anyone please confirm what is the max tolerance is allowed?

over 2 years ago

0 Rob Reeder over 2 years ago

TI__Mastermind 45670 points

Hi Harshitha,

Its basically a calculation of one multiframe on the JESD link or the sysref frequency, which should be the same. The elastic buffer should be able to handle this tolerance.

Regards,

Rob

0 Harshitha Reddy over 2 years ago in reply to Rob Reeder

Prodigy 80 points

Hi Reeder,

Thank you for your response.

For multi channels ADC Synchronization and to achieve phase matching among the x3 ADCs, do we need to Length match between JESD Lanes (x48 lanes) among all the x3 ADCs.

0 Rob Reeder over 2 years ago in reply to Harshitha Reddy

TI__Mastermind 45670 points

Hi Harshitha,

I have addressed this question per your email.

I am closing this post.

Thx,

Rob

Data converters

Data converters forum

ADC12DJ5200RF: ADC12DJ5200RF JESD0204 lines length matching requirement