Quad-Channel, Digital Isolators,
Enhanced System-Level ESD Reliability
Data Sheet
ADuM3400/ADuM3401/ADuM3402
FEATURES
GENERAL DESCRIPTION
Enhanced system-level ESD performance per IEC 61000-4-x
Low power operation
5 V operation
The ADuM340x1 are 4-channel digital isolators based on the
Analog Devices, Inc., iCoupler® technology. Combining high
speed CMOS and monolithic air core transformer technology,
these isolation components provide outstanding performance
characteristics superior to alternatives such as optocoupler devices.
1.4 mA per channel maximum at 0 Mbps to 2 Mbps
4.3 mA per channel maximum at 10 Mbps
34 mA per channel maximum at 90 Mbps
3 V operation
0.9 mA per channel maximum at 0 Mbps to 2 Mbps
2.4 mA per channel maximum at 10 Mbps
20 mA per channel maximum at 90 Mbps
Bidirectional communication
iCoupler devices remove the design difficulties commonly
associated with optocouplers. Typical optocoupler concerns
regarding uncertain current transfer ratios, nonlinear transfer
functions, and temperature and lifetime effects are eliminated
with the simple iCoupler digital interfaces and stable performance
characteristics. The need for external drivers and other discrete
components is eliminated with these iCoupler products. Further-
more, iCoupler devices consume one-tenth to one-sixth the
power of optocouplers at comparable signal data rates.
3 V/5 V level translation
High temperature operation: 105°C
High data rate: dc to 90 Mbps (NRZ)
Precise timing characteristics
2 ns maximum pulse width distortion
2 ns maximum channel-to-channel matching
High common-mode transient immunity: >25 kV/μs
Output enable function
16-lead SOIC wide body, RoHS-compliant package
Safety and regulatory approvals
UL recognition: 2500 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
VDE Certificate of Conformity
DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12
VIORM = 560 V peak
The ADuM340x isolators provide four independent isolation
channels in a variety of channel configurations and data rates
(see the Ordering Guide). All models operate with the supply
voltage on either side ranging from 2.7 V to 5.5 V, providing
compatibility with lower voltage systems as well as enabling a
voltage translation functionality across the isolation barrier. The
ADuM340x isolators have a patented refresh feature that ensures dc
correctness in the absence of input logic transitions and during
power-up/power-down conditions.
In comparison to the ADuM340x isolators, the ADuM340x
isolators contain various circuit and layout changes to provide
increased capability relative to system-level IEC 61000-4-x testing
(ESD/burst/surge). The precise capability in these tests for either
the ADuM140x or ADuM340x products is strongly determined
by the design and layout of the user’s board or module. For more
information, see the AN-793 Application Note, ESD/Latch-Up
Considerations with iCoupler Isolation Products.
APPLICATIONS
General-purpose multichannel isolation
SPI/data converter isolation
RS-232/RS-422/RS-485 transceivers
Industrial field bus isolation
1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329.
FUNCTIONAL BLOCK DIAGRAMS
1
2
3
16
1
2
3
16
V
1
2
3
16
15
14
V
V
V
V
V
DD2
DD1
DD2
DD1
DD2
DD1
15 GND
15 GND
2
GND
V
GND
V
GND
V
GND
1
2
1
1
2
14
V
14
V
ENCODE
ENCODE
ENCODE
DECODE
DECODE
DECODE
DECODE
ENCODE
ENCODE
ENCODE
DECODE
DECODE
DECODE
DECODE
ENCODE
ENCODE
ENCODE
ENCODE
ENCODE
ENCODE
DECODE
DECODE
DECODE
DECODE
V
IA
IB
OA
IA
IB
OA
IA
IB
OA
V
V
V
4
5
13
V
4
5
13
V
4
5
13
12
V
OB
OB
OB
12
12
V
V
V
V
V
V
V
V
IC
OC
OC
IC
IC
OC
6
7
8
11
10
9
6
7
8
11
10
9
6
7
8
11
10
9
V
V
V
V
V
V
OD
ID
OD
ID
ID
OD
V
V
NC
GND
V
E1
E2
E1
E2
E2
GND
GND
GND
GND
2
GND
1
2
1
1
2
Figure 1. ADuM3400 Functional Block Diagram
Figure 2. ADuM3401 Functional Block Diagram
Figure 3. ADuM3402 Functional Block Diagram
Rev. C
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license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
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Technical Support
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