AnsweredAssumed Answered

(ADV728xA)To connect DIAG when we are using pseudo differential

Question asked by donadona999s on Mar 21, 2018
Latest reply on Mar 26, 2018 by donadona999s

Hi !

 

I want to confirm one thing about ADV728xA.

At the datasheet P18, this is written.

But at datasheet P24, this is written.

 

At P18, DIAG is connect to DIFF+ but at P24 DIAG is connect at DIFF-.

Also at P18, it says

"The DIAG1 and DIAG2 pins can sense an STB event on
either the positive or the negative differential input because of
the negligible voltage drop across Resistor R1.".

I can understand if we use this device at full differential but our customer want to use pseudo differential.

When they use pseudo differential, which pin is correct to connect?

I think connecting DIAG pin to DIFF+ is correct.

 

Best regards

Kawa

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