FEATURES
FUNCTIONAL BLOCK DIAGRAMS
VDD1 1
RECT
REG
16
VISO
15
GNDISO
VIA/VOA 3
14
VOA/VIA
13
VOB/VIB
12
VOC/VIC
VIB/VOB 4
VIC/VOC 5
4 CHANNEL iCOUPLER CORE
ADuM5401/ADuM5402/
ADuM5403/ADuM5404
VOD 6
11
VID
RCOUT 7
10
VSEL
GND1 8
9
GNDISO
Figure 1.
VIB
VIC
RS-232/RS-422/RS-485 transceivers
Industrial field bus isolation
Power supply start-up bias and gate drives
Isolated sensor interfaces
Industrial PLCs
VOD
3
ADuM5401
14
4
13
5
12
6
VOA
VOB
11
VOC
VID
06577-100
VIA
APPLICATIONS
Figure 2. ADuM5401
VIB
VOC
VOD
1
The ADuM5401/ADuM5402/ADuM5403/ADuM5404 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.
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).
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.
3
ADuM5402
14
4
13
5
12
6
VOA
VOB
11
VIC
VID
06577-101
VIA
GENERAL DESCRIPTION
1
OSC
GND1 2
06577-001
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
UL recognition
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)
VIORM = 560 V peak
Figure 3. ADuM5402
VOB
VOC
VOD
3
ADuM5403
14
4
13
5
12
6
VOA
VIB
11
VIC
VID
06577-102
VIA
Figure 4. ADuM5403
VOA
VOB
3
ADuM5404
14
4
13
5
12
6
VOC
VIA
VIB
11
VOD
VIC
VID
06577-103
Data Sheet
Quad-Channel, 2.5 kV Isolators with
Integrated DC-to-DC Converter
ADuM5401/ADuM5402/ADuM5403/ADuM5404
Figure 5. ADuM5404
Table 1. Power Levels
Input Voltage (V)
5.0
5.0
3.3
Output Voltage (V)
5.0
3.3
3.3
Output Power (mW)
500
330
200
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 registered trademarks are the 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.
