Data Sheet
FEATURES
Quad-Channel, 2.5 kV Isolators with
Integrated DC-to-DC Converter
FUNCTIONAL BLOCK DIAGRAMS
V
DD1 1
GND
1 2
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
iCOUPLER
CORE
OSC
RECT
REG
16
15
14
13
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
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)
V
IORM
= 560 V peak
V
ISO
GND
ISO
V
OA
/V
IA
V
OB
/V
IB
V
OC
/V
IC
V
ID
06577-001
ADuM5401/ADuM5402/
ADuM5403/ADuM5404
12
11
10
9
V
SEL
GND
ISO
Figure 1.
V
IA
V
IB
V
IC
V
OD
3
4
5
6
APPLICATIONS
RS-232/RS-422/RS-485 transceivers
Industrial field bus isolation
Power supply start-up bias and gate drives
Isolated sensor interfaces
Industrial PLCs
ADuM5401
14
13
12
11
V
OA
V
OB
V
OC
V
ID
06577-100
Figure 2.
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
06577-101
GENERAL DESCRIPTION
The
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
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
for board layout
recommendations.
1
Figure 3.
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
06577-102
Figure 4.
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.
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
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