AD7124-4 power sequence

Question

Hi, 
 
 AD7124-4B has two independent power supply pins: AVDD and IOVDD. 
 According to ABSOLUTE MAXIMUM RATINGS, there seems to be no order of the turning on/off the power. 
 Is it right? 
 
 regards, 
 HM

JellenieR · Accepted Answer

Hi, 
 The datasheet doesn't mention anything about it so there should be no issue about power sequence. It doesn't matter whether you power up AVDD or IOVDD first. 
 Thanks, 
 Jellenie

PBArrow · Answer

I don't know if it's needed, but if you look at the AD7124-4 eval board User Guide schematics, you will see they use the ADM1185 power sequencer to bring up IOVdd after AVdd.

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AD7124-4 power sequence

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