Quad-Channel, 2.5 kV Isolators with
Integrated DC-to-DC Converter
Data Sheet
FEATURES
ADuM5401 / ADuM5402 / ADuM5403 / ADuM5404
FUNCTIONAL BLOCK DIAGRAMS
iso Power 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
V DD1 1
GND 1 2
OSC
RECT
REG
16
15
V ISO
GND ISO
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
V IA /V OA 3
V IB /V OB 4
V IC /V OC 5
V OD 6
RC OUT 7
GND 1 8
4 CHANNEL i COUPLER CORE
ADuM5401/ADuM5402/
ADuM5403/ADuM5404
14
13
12
11
10
9
V OA /V IA
V OB /V IB
V OC /V IC
V ID
V SEL
GND ISO
CSA Component Acceptance Notice #5A
VDE certificate of conformity (pending)
IEC 60747-5-2 (VDE 0884, Part 2)
Figure 1.
V IORM = 560 V peak
APPLICATIONS
RS-232/RS-422/RS-485 transceivers
Industrial field bus isolation
V IA
V IB
V IC
V OD
3
4
5
6
ADuM5401
14
13
12
11
V OA
V OB
V OC
V ID
Power supply start-up bias and gate drives
Figure 2. ADuM5401
The ADuM5401 / ADuM5402 / ADuM5403 / ADuM5404 are
Isolated sensor interfaces
Industrial PLCs
GENERAL DESCRIPTION
1
V IA
V IB
V OC
V OD
3
4
5
6
ADuM5402
14
13
12
11
V OA
V OB
V IC
V ID
quad-channel digital isolators with iso Power?, an integrated,
isolated dc-to-dc converter. Based on the Analog Devices, Inc.,
Figure 3. ADuM5402
i Coupler? 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
V IA
V OB
V OC
V OD
3
4
5
6
ADuM5403
14
13
12
11
V OA
V IB
V IC
V ID
for a separate, isolated dc-to-dc converter in low power, isolated
designs. The i Coupler chip scale transformer technology is used
Figure 4. ADuM5403
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
V OA
V OB
V OC
V OD
3
4
5
6
ADuM5404
14
13
12
11
V IA
V IB
V IC
V ID
provide four independent isolation channels in a variety of
channel configurations and data rates (see the Ordering Guide
for more information).
Table 1. Power Levels
Figure 5. ADuM5404
iso Power 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
Input Voltage (V)
5.0
5.0
3.3
Output Voltage (V)
5.0
3.3
3.3
Output Power (mW)
500
330
200
recommendations.
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 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.
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