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ELECTRICAL CHARACTERISTICS at different supply voltage of ADuM141E1

Question asked by takayuki-nozawa on Aug 9, 2017
Latest reply on Aug 9, 2017 by takayuki-nozawa

Hi

I have a question for ELECTRICAL CHARACTERISTICS at different supply voltage of ADuM141E1.

 

The customer need to use ADuM141E1 at VDD1=3.3V and VDD2=5V.
How can I understand for ELECTRICAL CHARACTERISTICS at this condition?

I understand that ADuM141E1 works well at different supply voltage from 1.7 to 5.5V on the data sheet.
But regarding ELECTRICAL CHARACTERISTICS in the data sheet, the condition of supply voltage is same voltage(VDD1=VDD2).

 

I compared ELECTRICAL CHARACTERISTICS and assumed as follow.
Is my understanding correct?

 

I compared ELECTRICAL CHARACTERISTICS between VDD1=VDD2=3.3V(table 3) and VDD1=VDD2=5V(table 1).
The difference of these are SWITCHING SPECIFICATIONS and Quiescent Supply Current.

The case of VDD1=3.3V and VDD2=5V:

Regarding primary side(VDD1=3.3V), IDD1(Q) refer to the max value of table 3.
Regarding secondary side(VDD2=5V), IDD2(Q) refer to the max value of table 1.
Regarding SWITCHING SPECIFICATIONS(Propagation Delay, Propagation Delay Skew and Jitter) ,these refer to larger maximum or typical value (table 3).
Please see to attachment.

 

Best regards
Nozawa

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