ADuM3160 Data Sheet
Rev. C | Page 12 of 16
Bipolar ac voltage is the most stringent environment. The goal
of a 50-year operating lifetime under the bipolar ac condition
determines the maximum working voltage recommended by
Analog Devices.
In the case of unipolar ac or dc voltage, the stress on the insu-
lation is significantly lower. This allows operation at higher
working voltages while still achieving a 50-year service life.
The working voltages listed in Table 8 can be applied while
maintaining the 50-year minimum lifetime, provided that the
voltage conforms to either the unipolar ac or dc voltage case.
Any cross-insulation voltage waveform that does not conform
to Figure 9 or Figure 10 should be treated as a bipolar ac wave-
form, and its peak voltage should be limited to the 50-year
lifetime voltage value listed in Table 8.
Note that the voltage shown in Figure 9 is presented as sinu-
soidal for illustration purposes only. The sinusoidal depiction
is meant to represent any voltage waveform varying between
0 V and some limiting value. The limiting value can be positive
or negative, but the voltage cannot cross 0 V.
0V
RATED PEAK VOLTAGE
09125-008
Figure 8. Bipolar AC Waveform
0V
RATED PEAK VOLTAGE
09125-009
Figure 9. Unipolar AC Waveform
0V
RATED PEAK VOLTAGE
09125-010
Figure 10. DC Waveform
