I have a question for your ADuM1100 i-coupler,
Our customer is proceeding to pwb design to use ADuM1100.
So as for the power supply,
Should we put the LC filter on the power-line for switching noise reduction like return back to power-line?
Otherwise we dont care of putting LC filter, correct?
Connect VDD1 to power-line directly,OK?
Sorry I correct as follows.
Should we put the LC filter on the power-line for anti static discharge noise?
except for CN-0159, sorry
Yes, it is electrostatic discharge what I say.
Here is the plan for anti ESD.
Customer will be put L1, L2 and R1, not LC sorry.
C1,C2 are coupling capacitor we put in ordinary there closest VDD pin.
You have ADuM3100 that is more strong for ESD noise, I found.
To replace ADuM3100 also is one of the solution for us, I think.
Otherwise is your ADuM1100 updated for anti ESD already?
Any comment for this?
When you say anti-static discharge noise do you mean electrostatic discharge (ESD)?Do you happen to know the specifications for the switching power supply by any chance?A schematic would be helpful in assisting you as well if you can provide one.
In general connecting the part directly to VDD is fine (With the recommended decoupling capacitors). However some engineers might include inductors when the board might be used in an area of high noise.
If customer design his PWB from now, so those components pads should be put there I think.
As Better safe than sorry!
Thank you for AN-0793.
I will also share this AN-793 with our customer.