Hi to all,
now I think I'am in the right place to post my question about DDC112.
My question is underneath but I also noticed a similar unanswered question in the medical Forum: "DDC112 AVDD and DVDD issue" by Ron Ying. Please also read my question and tell me what's going on!
Hi,
I have two questions concerning DDC112:
1.If I use two separate Supplies for Avdd and Dvdd, does a specific sequencing exist between the two?
This amounts to the same question as Rons!
2.What does the following restriction mean?
“Prior to power-up, all digital and analog input pins must be
LOW. At the time of power-up, these signal inputs can be
biased to a voltage other than 0V, however, they should
never exceed AVDD or DVDD.”
Does it mean:
Analog inputs should not exceed Avdd AND Dvdd
OR
Analog inputs should not exceed Avdd only
AND
Digital inputs should not exceed Avdd AND Dvdd
OR
Digital inputs should not exceed Dvdd only
ie. do the inputs have restriction to their respective supplies or both?
Thanks in advance,
Tarik
