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AD7768 daisy chain  two successive synchronization

Question asked by Terumasa on Dec 14, 2017
Latest reply on Mar 13, 2018 by jcolao

Hello

 

We use  2 pcs of AD7767 at daisy chain . (Formatx  01 settings)

START , SYNC_IN and SYNC_OUT pin at datasheet rev.A P24 describes below.

 

”In a daisy-chained system of AD7768 devices, two successive synchronization pulses must be applied to guarantee that all ADCs are synchronized."

 

What does "two succeessivesynchronizatoin" mean ?

(does this mean that we should input twice START for  safe because START is asynchronous ?

 

Please let me know your advice.

 

Regards,

Terumasa

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