Quad-Channel, 2.5 kV Isolators with
Integrated DC-to-DC Converter
Data Sheet
ADuM5401/ADuM5402/ADuM5403/ADuM5404
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
isoPower integrated, isolated dc-to-dc converter
Regulated 3.3 V or 5.0 V output
Up to 500 mW output power
Quad dc-to-25 Mbps (NRZ) signal isolation channels
16-lead SOIC package with 7.6 mm creepage
High temperature operation: 105°C maximum
High common-mode transient immunity: >25 kV/μs
Safety and regulatory approvals
OSC
RECT
REG
1
2
3
4
5
6
7
8
16
V
V
DD1
ISO
GND
15 GND
1
ISO
V
V
V
/V
14
13
12
11
10
9
V
V
V
V
V
/V
IA OA
OA IA
4 CHANNEL iCOUPLER CORE
/V
/V
IB OB
OB IB
ADuM5401/ADuM5402/
ADuM5403/ADuM5404
/V
/V
IC OC
OC IC
V
OD
ID
RC
OUT
SEL
UL recognition
GND
GND
ISO
2500 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
VDE certificate of conformity (pending)
IEC 60747-5-2 (VDE 0884, Part 2)
1
Figure 1.
V
IORM = 560 V peak
V
V
V
V
V
V
IA
IB
IC
OA
OB
OC
3
4
5
6
ADuM5401 14
13
APPLICATIONS
12
11
RS-232/RS-422/RS-485 transceivers
Industrial field bus isolation
Power supply start-up bias and gate drives
Isolated sensor interfaces
V
V
ID
OD
Figure 2. ADuM5401
V
V
V
V
IA
IB
OA
OB
IC
3
4
5
6
ADuM5402 14
Industrial PLCs
V
13
V
GENERAL DESCRIPTION
OC
12
11
V
V
ID
The ADuM5401/ADuM5402/ADuM5403/ADuM54041 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 or 3.3 V
from a 5.0 V input supply, or at 3.3 V from a 3.3 V supply at the
power levels shown in Table 1. These devices eliminate 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 for the power and feedback paths
in the dc-to-dc converter. The result is a small form factor, total
isolation solution.
OD
Figure 3. ADuM5402
V
V
V
V
IA
OB
OC
OA
IB
3
4
5
6
ADuM5403 14
V
V
13
IC
12
11
V
V
ID
OD
Figure 4. ADuM5403
V
V
V
V
V
V
OA
OB
OC
IA
IB
IC
ADuM5404 14
3
4
5
6
13
12
11
V
V
ID
OD
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).
Figure 5. ADuM5404
Table 1. Power Levels
Input Voltage (V) Output Voltage (V) Output Power (mW)
isoPower uses high frequency switching elements to transfer
power through its transformer. Special care must be taken
during printed circuit board (PCB) layout to meet emissions
standards. See the AN-0971 Application Note for board layout
recommendations.
5.0
5.0
3.3
5.0
3.3
3.3
500
330
200
1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
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.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2008–2012 Analog Devices, Inc. All rights reserved.
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