Do VDD1 and VDD2 of AD7400 have specification of rising time at power up ?
Our customer's power supply IC to AD7400_VDD output 1.2V~1.6V for a certain period (300us~1ms), and output 5V after that.
Is there any problem with above?
I can not find the specification of rising time at power up in AD7400 datasheet.
If above has any conern , please let me know your advice.
Thank you for your advice.
As you mention, our customer's power supply condition does not exceed the absolute maximum ratings.
But, I think below power up sequence may be bad for IC.
"power supply rail goes up - down or stop temporary by reaching 5V( IC turn ON) ,
So, there is no problem if a concern for this condition is absolute maximum ratings only.
If you have any other concern of AD7400 for this condition , please let me know you advice.