Quad-Channel Isolators with
Integrated DC-to-DC Converter
ADuM5401/ADuM5402/ADuM5403/ADuM5404
FUNCTIONAL BLOCK DIAGRAMS
FEATURES
isoPower integrated, isolated dc-to-dc converter
Regulated 3.3 V or 5 V output
500 mW output power
Quad dc-to-25 Mbps (NRZ) signal isolation channels
Schmitt trigger inputs
16-lead SOIC package with >8 mm creepage
High temperature operation: 105°C
High common-mode transient immunity: >25 kV/μs
Safety and regulatory approvals (pending)
UL recognition
OSC
RECT
REG
1
2
3
4
5
6
7
8
16
V
V
DD1
ISO
GND
15 GND
1
A
B
C
D
ISO
I/O
I/O
I/O
I/O
14 I/O
A
4 CHANNEL iCOUPLER CORE
I/O
I/O
13
12
B
ADuM5401/ADuM5402/
ADuM5403/ADuM5404
C
11 I/O
D
NC
GND
10
9
V
SEL
GND
ISO
1
2500 V rms for 1 minute per UL1577
CSA Component Acceptance Notice #5A
VDE certificate of conformity
Figure 1.
V
V
V
V
V
V
IA
IB
IC
OA
OB
OC
ADuM5401 14
3
4
5
6
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
13
VIORM = 560 V peak
12
11
V
V
ID
APPLICATIONS
OD
RS-232/RS-422/RS-485 transceiver
Industrial field bus isolation
Power supply startup bias and gate drive
Isolated sensor interface
Figure 2. ADuM5401
V
V
V
V
IA
IB
OA
OB
IC
3
4
5
6
ADuM5402 14
V
Industrial PLC
13
V
OC
12
11
V
V
ID
OD
GENERAL DESCRIPTION
The ADuM5401/ADuM5402/ADuM5403/ADuM54041 devices
are quad-channel digital isolators with isoPower™, an integrated,
isolated dc-to-dc converter. Based on the Analog Devices, Inc.,
iCoupler® technology, the dc-to-dc converter provides up to
500 mW of regulated, isolated power at either 5.0 V from a 5.0 V
input supply or 3.3 V from a 3.3 V supply. This eliminates the need
for a separate, isolated dc-to-dc converter in low power, isolated
designs. The iCoupler chip scale transformer technology is used
to isolate the logic signals and the magnetic components of the
dc-to-dc converter. The result is a small form factor, total isolation
solution.
Figure 3. ADuM5402
V
V
V
V
IA
OB
OC
OA
3
4
5
6
ADuM5403 14
V
V
IB
13
IC
12
11
V
V
ID
OD
Figure 4. ADuM5403
V
V
V
V
V
V
OA
OB
OC
IA
IB
IC
3
4
5
6
ADuM5404 14
13
The ADuM5401/ADuM5402/ADuM5403/ADuM5404 isolators
provide four independent isolation channels in a variety of
channel configurations and data rates (see the Ordering Guide
for more information).
12
11
V
V
ID
OD
Figure 5. ADuM5404
1
Protected by U.S. Patents 5,952,849; 6,873,065; and 7075 329 B2. Other
patents pending.
Rev. 0
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