ADUM7440ARQZ Analog Devices Inc, ADUM7440ARQZ Datasheet - Page 16
![IC ISOLATOR DGTL QUAD 16QSOP](/photos/7/65/76545/rq-16_sml.jpg)
ADUM7440ARQZ
Manufacturer Part Number
ADUM7440ARQZ
Description
IC ISOLATOR DGTL QUAD 16QSOP
Manufacturer
Analog Devices Inc
Series
iCoupler®r
Datasheet
1.ADUM7441ARQZ.pdf
(20 pages)
Specifications of ADUM7440ARQZ
Propagation Delay
75ns
Inputs - Side 1/side 2
4/0
Number Of Channels
4
Isolation Rating
1000Vrms
Voltage - Supply
3 V ~ 5.5 V
Data Rate
1Mbps
Output Type
Logic
Package / Case
16-QSOP
Operating Temperature
-40°C ~ 105°C
No. Of Channels
4
Supply Current
4.3mA
Supply Voltage Range
3V To 5.5V
Digital Ic Case Style
QSOP
No. Of Pins
16
Operating Temperature Range
-40°C To +105°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ADUM7440ARQZ
Manufacturer:
ADI
Quantity:
15
Part Number:
ADUM7440ARQZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
ADuM7440/ADuM7441/ADuM7442
The insulation lifetime of the ADuM744x depends on the
voltage waveform type imposed across the isolation barrier.
The iCoupler insulation structure degrades at different rates
depending on whether the waveform is bipolar ac, unipolar
ac, or dc. Figure 20, Figure 21, and Figure 22 illustrate these
different isolation voltage waveforms.
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 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 18 can be applied while
maintaining 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 21
or Figure 22 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 18.
Rev. B | Page 16 of 20
Note that the voltage presented in Figure 21 is shown as sinusoidal
for illustration purposes only. It 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.
RATED PEAK VOLTAGE
RATED PEAK VOLTAGE
RATED PEAK VOLTAGE
0V
0V
0V
Figure 21. Unipolar AC Waveform
Figure 20. Bipolar AC Waveform
Figure 22. DC Waveform