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ADV7511W : POWER-UP SEQUENCE inquiry

Question asked by tomoto Employee on May 9, 2017
Latest reply on May 23, 2017 by tomoto

Hi

 

I understand there is no power up sequence required for ADV7511W from former thread.

https://ez.analog.com/message/219176?commentID=219176#comment-219176

 

On question brought up from an ADV7511 user.

When he attempted 1.8V DVDD(DVDD, AVDD, PVDD, BGVDD) ON at first then 3.3V DVDD(DVDD_3V) ON after that. 

Low votage(around 0.0~0.3V, like attached ppt) observed on 3.3V DVDD(DVDD_3V) line just after the 1.8V DVDD(DVDD, AVDD, PVDD, BGVDD) ON.

The low voltage(around 0.0~0.3V) will be observed if 3.3V DVDD(DVDD_3V) line physically disconnected. 

Is this known behaviour? Please advise.

 

Regards,

Tomoto

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