from output supply. Can you tell me what can be the cause of this problem ?
We tough to a too high output current (1mA). Is it possible ?
There are a few things that can cause the ADuM1100 to burn out.
ESD can cause devices to become degraded, non-functional, or they can latchup
(drawing a large current from the supply and becoming hot). The ESD rating of
the device is 2kV (while unpowered).
Also exceeding the package power dissipation, transient overvoltage on the
supplies or the inputs. Taking 1mA from the outputs should not cause any power
dissipation or electrical overload problems, and the output voltage levels
remain valid with upto +/-4mA output current.