Quad-Channel Isolators with
Integrated DC-to-DC Converter
ADuM5401/ADuM5402/ADuM5403/ADuM5404
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
2500 V rms for 1 minute per UL1577
CSA Component Acceptance Notice #5A
VDE certificate of conformity
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
V
IORM
= 560 V peak
FUNCTIONAL BLOCK DIAGRAMS
V
DD1 1
GND
1 2
I/O
A 3
I/O
B 4
I/O
C 5
I/O
D 6
NC
7
GND
1 8
4 CHANNEL
iCOUPLER
CORE
OSC
RECT
REG
16
V
ISO
15
GND
ISO
14
I/O
A
13
I/O
B
12
I/O
C
11
I/O
D
06577-001
ADuM5401/ADuM5402/
ADuM5403/ADuM5404
10
V
SEL
9
GND
ISO
Figure 1.
V
IA
V
IB
V
IC
V
OD
V
OA
V
OB
V
OC
V
ID
06577-100
3
4
5
6
ADuM5401
14
13
12
11
APPLICATIONS
RS-232/RS-422/RS-485 transceiver
Industrial field bus isolation
Power supply startup bias and gate drive
Isolated sensor interface
Industrial PLC
Figure 2. ADuM5401
V
IA
V
IB
V
OC
V
OA
V
OB
V
IC
V
ID
06577-101
3
4
5
6
ADuM5402
14
13
12
11
GENERAL DESCRIPTION
The ADuM5401/ADuM5402/ADuM5403/ADuM5404
1
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.
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).
1
V
OD
Figure 3. ADuM5402
V
IA
V
OB
V
OC
V
OD
V
OA
V
IB
V
IC
V
ID
06577-102
3
4
5
6
ADuM5403
14
13
12
11
Figure 4. ADuM5403
V
OA
V
OB
V
OC
V
OD
6
11
3
4
5
ADuM5404
14
13
12
V
IA
V
IB
V
IC
V
ID
06577-103
Figure 5. ADuM5404
Protected by U.S. Patents 5,952,849; 6,873,065; and 7075 329 B2. Other
patents pending.
Rev. 0
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.
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Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2008 Analog Devices, Inc. All rights reserved.
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