ADC31JB68: Does I need to use the SYSREF input signal?

Rodrigo Bernardo

Part Number: ADC31JB68

Hello, I will have only one ADC31JB68 connected in a FPGA (JESD204) in my design. As there is no multiple devices does I need to use the SysRef signal input of the ADC? If no, can I tie the SysRef input to zero?

Thank you,

Rodrigo

over 4 years ago

0 Rob Reeder over 4 years ago

TI__Mastermind 45670 points

Hi Rodrigo,

You don't need to use the Sysref signal if you are only using one ADC. However, deterministic latency would not be guaranteed if sysref is not used.

If you don't plan to use the sysref signals, leaving them floating is fine.

Regards,

Rob

0 Rodrigo Bernardo over 4 years ago in reply to Rob Reeder

Prodigy 190 points

Hi Rob, thank you for the prompt answer.

We intend to store the digital data for a specific period to analyse it entirely after. So, I don't believe that the latency will be an issue for this case.

Regards,

Rodrigo

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ADC31JB68: Does I need to use the SYSREF input signal?