AnsweredAssumed Answered

Power sequence ADV7441A

Question asked by wallman16 on Jan 18, 2012
Latest reply on Feb 7, 2012 by DaveD

Hi ,

 

Will the device be effected if the power squence of 1.8V-> 3.3V is not implemented .

 

We had not implemented the power up sequence and now we have implemented the sequence .

 

Half of the boards are not working properly

     : There are not able to lock on to the HDMI input and the outputs are stable

        - Clock is not constant , cycle period is long here and there

 

On checking without power OFF ,checking the resistance between HDMI input and GND we find ,

 

Proper working device         : 4 pair HDMI input pin was 7 Mohm

Not properly working device : some 10 - some 100 ohm

 

Thanking you

With best regards and wishes

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