Quad-Channel Digital Isolators
ADuM1410/ADuM1411/ADuM1412
FEATURES
Low power operation
5 V operation
1.3 mA per channel max @ 0 Mbps to 2 Mbps
4.0 mA per channel max @ 10 Mbps
3 V operation
0.8 mA per channel max @ 0 Mbps to 2 Mbps
1.8 mA per channel max @ 10 Mbps
Bidirectional communication
3 V/5 V level translation
High temperature operation: 105°C
Up to 10 Mbps data rate (NRZ)
Programmable default output state
High common-mode transient immunity: >25 kV/μs
16-lead, Pb-free, SOIC wide body package
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)
DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01
DIN EN 60950 (VDE 0805): 2001-12; EN 60950: 2000
V
IORM
= 560 V peak
FUNCTIONAL BLOCK DIAGRAMS
V
DD1 1
GND
1 2
V
IA 3
V
IB 4
V
IC 5
V
ID 6
DISABLE
7
GND
1 8
ADuM1410
ENCODE
ENCODE
ENCODE
ENCODE
DECODE
DECODE
DECODE
DECODE
16
15
14
13
12
11
10
9
V
DD2
GND
2
V
OA
V
OB
V
OC
V
OD
06502-001
CTRL
GND
2
Figure 1. ADuM1410 Functional Block Diagram
V
DD1 1
GND
1 2
V
IA 3
V
IB 4
V
IC 5
V
OD 6
CTRL
1 7
GND
1 8
16
15
ADuM1411
ENCODE
ENCODE
ENCODE
DECODE
DECODE
DECODE
DECODE
ENCODE
V
DD2
GND
2
V
OA
V
OB
V
OC
V
ID
06502-002
06502-003
14
13
12
11
10
9
CTRL
2
GND
2
Figure 2. ADuM1411 Functional Block Diagram
V
DD1 1
GND
1 2
V
IA 3
V
IB 4
V
OC 5
V
OD 6
CTRL
1 7
GND
1 8
16
15
APPLICATIONS
General-purpose multichannel isolation
SPI® interface/data converter isolation
RS-232/RS-422/RS-485 transceiver
Industrial field bus isolation
ADuM1412
ENCODE
ENCODE
DECODE
DECODE
DECODE
DECODE
ENCODE
ENCODE
V
DD2
GND
2
V
OA
V
OB
V
IC
V
ID
CTRL
2
GND
2
14
13
12
11
10
9
Figure 3. ADuM1412 Functional Block Diagram
GENERAL DESCRIPTION
The ADuM141x are four-channel digital isolators based on
Analog Devices, Inc.
iCoupler®
technology. Combining high
speed CMOS and monolithic air core transformer technologies,
these isolation components provide outstanding performance
characteristics superior to alternatives such as optocoupler devices.
By avoiding the use of LEDs and photodiodes,
iCoupler
devices
remove the design difficulties commonly associated with opto-
couplers. The usual concerns that arise with optocouplers, such
as uncertain current transfer ratios, nonlinear transfer functions,
and temperature and lifetime effects are eliminated with the
simple
iCoupler
digital interfaces and stable performance charac-
teristics. The need for external drivers and other discrete
components is eliminated with these
iCoupler
products.
1
Furthermore,
iCoupler
devices consume one-tenth to one-sixth
the power of optocouplers at comparable signal data rates.
The ADuM141x isolators provide four independent isolation
channels in a variety of channel configurations and data rates
(see the Ordering Guide) up to 10 Mbps. All models operate
with the supply voltage on either side ranging from 2.7 V to 5.5 V,
providing compatibility with lower voltage systems as well as
enabling voltage translation functionality across the isolation
barrier. All products also have a default output control pin. This
allows the user to define the logic state the outputs are to adopt
in the absence of the input power. Unlike other optocoupler
alternatives, the ADuM141x isolators have a patented refresh
feature that ensures dc correctness in the absence of input logic
transitions and during power-up/power-down conditions.
Protected by U.S. Patents 5,952,849, 6,873,065 and 7,075,329. Other patents pending.
Rev. E
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
Fax: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.
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