clock excursion range 0.8v or 3.3v?

Hi mohammadsdtmnd 

Thank for using AD8285.

Kindly give some time for the product owner (C.Chang ) to look into this and provide their response.

In the meantime, please note that back-to-back Schottky diodes in transformer-coupled differential clock inputs are not unnecessary—they play a critical role in protecting the ADC, maintaining signal integrity, and ensuring compatibility with various clock sources.

Hi mohammadsdtmnd 

Thank for using AD8285.

Kindly give some time for the product owner (C.Chang ) to look into this and provide their response.

In the meantime, please note that back-to-back Schottky diodes in transformer-coupled differential clock inputs are not unnecessary—they play a critical role in protecting the ADC, maintaining signal integrity, and ensuring compatibility with various clock sources.

Hi JAlipio 

Thank you kindly for your fast response, I know diodes like tvs protecting the line from over voltage. But datasheet told it supports 0 to 3.3 v. If clock sourced from connector that only is required to protect the line maybe. But I think that must not be a should when we drive it from 3.3v driver or differential drivers directly. Doesn't it?