adum3160 Analog Devices, Inc., adum3160 Datasheet - Page 13

• Manufacturer Part Number: adum3160
• Description: Full/low Speed 2.5 Kv Usb Digital Isolator Adum3160
• Manufacturer: Analog Devices, Inc.

Bipolar ac voltage is the most stringent environment. The goal
of a 50-year operating lifetime under the ac bipolar condition
determines the Analog Devices recommended maximum
working voltage.
In the case of unipolar ac or dc voltage, the stress on the insul-
ation 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 main-
taining the 50-year minimum lifetime, provided 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 waveform, 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 8 and Figure 9 is
presented as sinusoidal for illustration purposes only. The
sinusoidal depiction is meant to represent any voltage waveform
Rev. A | Page 13 of 16
varying between 0 and some limiting value. The limiting value
can be positive or negative, but the voltage cannot cross 0 V.
RATED PEAK VOLTAGE
RATED PEAK VOLTAGE
RATED PEAK VOLTAGE
0V
0V
0V
Figure 9. Unipolar AC Waveform
Figure 8. Bipolar AC Waveform
Figure 10. DC Waveform
ADuM3160