Other Parts Discussed in Thread: AMC1300, AMC1200
I am using AMC1100 with a zener diode structure, datasheet fig. 39, to provide 5V for the High Side. The aim was to supply 5V to AMC1100 directy from input voltage, without using an extra isolated voltage regulator. However, the problem is that without High Side voltage supply (Below approx. 3V) the output set to 2.5V or -2.5V (VOUTP or VOUTN). 2 problems with that configuration:
1) When the input signal is off, the output is 2.5V.
2) It is 2.5V or -2.5V.
Is it expected or am I not using the device correctly?
If it is expected, a design without an extra regulator makes no sense since 0V (The input is off State) is not detected. (Maybe it can be detected with a condition for 2.5V level since output voltage will not exceed 2V during the normal operating.)