Quad-Channel Isolators with
Integrated DC-to-DC Converter
ADuM6400/ADuM6401/ADuM6402/ADuM6403/ADuM6404
FUNCTIONAL BLOCK DIAGRAMS
FEATURES
isoPower integrated, isolated dc-to-dc converter
Regulated 3.3 V or 5 V output
Up to 500 mW output power
Quad dc-to-25 Mbps (NRZ) signal isolation channels
Schmitt trigger inputs
16-lead SOIC package with 7.6 mm creepage
High temperature operation: 105°C
High common-mode transient immunity: >25 kV/μs
Safety and regulatory approvals (pending)
UL recognition
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
/V
14
13
12
11
10
9
V
V
V
V
V
/V
IA OA
IA OA
4-CHANNEL iCOUPLER CORE
/V
/V
IB OB
IB OB
ADuM6400/ADuM6401/
ADuM6402/ADuM6403/
ADuM6404
/V
/V
IC OC
IC OC
/V
ID OD
/V
ID OD
V
DDL
SEL
GND
GND
ISO
1
5000 V rms for 1 minute per UL1577
CSA Component Acceptance Notice #5A
IEC 60950-1: 600 V rms (reinforced)
IEC 60601-1: 250 V rms (reinforced)
VDE certificate of conformity
Figure 1. ADuM640x Block Diagram
V
V
IA
OA
3
4
5
6
14
13
12
11
V
V
V
V
V
V
IB
IC
ID
OB
OC
OD
ADuM6400
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
V
IORM = 560 V peak
Figure 2. ADuM6400
V
V
IA
OA
APPLICATIONS
3
4
5
6
14
13
12
11
V
V
V
V
V
IB
IC
OB
OC
ID
RS-232/RS-422/RS-485 transceivers
Medical isolation
AC/dc power supply startup bias and gate drives
Isolated sensor interface
ADuM6401
V
OD
Figure 3. ADuM6401
V
V
IA
OA
GENERAL DESCRIPTION
3
4
5
6
14
13
12
11
V
V
V
V
IB
OC
OD
OB
IC
The ADuM640x1 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 or 3.3 V from a 5.0 V input supply, or 3.3 V from a
3.3 V supply at the power levels shown in Table 1. 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 for the magnetic components
of the dc-to-dc converter. The result is a small form factor, total
isolation solution.
V
V
ADuM6402
ID
Figure 4. ADuM6402
V
V
IA
OA
3
4
5
6
14
13
12
11
V
V
V
V
V
V
OB
OC
OD
IB
IC
ID
ADuM6403
Figure 5. ADuM6403
V
V
IA
OA
3
4
5
6
14
13
12
11
V
V
V
V
IB
IC
ID
OB
OC
OD
The ADuM640x isolators provide four independent isolation
channels in a variety of channel configurations and data rates
(see the Ordering Guide for more information).
V
V
ADuM6404
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. Refer to the AN-0971 application note for board
layout recommendations at www.analog.com.
Figure 6. ADuM6404
Table 1. Power Levels
Input Voltage (V)
Output Voltage (V)
Output Power (mW)
5
5
500
330
200
5
3.3
3.3
3.3
1
Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are 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.
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
Fax: 781.461.3113
www.analog.com
©2009 Analog Devices, Inc. All rights reserved.
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