Triple-Channel Digital Isolators
ADuM1310/ADuM1311
FUNCTIONAL BLOCK DIAGRAMS
FEATURES
Low power operation
5 V operation
1
2
3
4
5
6
7
8
16
V
V
DD1
DD2
GND
15 GND
1
IA
IB
IC
2
1.7 mA per channel max @ 0 Mbps to 2 Mbps
4.0 mA per channel max @ 2 Mbps to 10 Mbps
3 V operation
1.0 mA per channel max @ 0 Mbps to 2 Mbps
2.1 mA per channel max @ 2 Mbps to 10 Mbps
Bidirectional communication
3 V/5 V level translation
Schmitt trigger inputs
High temperature operation: 105°C
Up to 10 Mbps data rate (NRZ)
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14
13
12
11
10
9
V
V
V
V
V
V
OA
OB
OC
NC
NC
CTRL
DISABLE
2
GND
GND
2
1
Programmable default output state
High common-mode transient immunity: >25 kV/μs
16-lead Pb-free SOIC wide body package
8.1 mm external creepage
Figure 1. ADuM1310
1
2
3
4
5
6
7
8
16
V
V
DD1
DD2
Safety and regulatory approvals
GND
15 GND
1
IA
IB
2
UL recognition: 2500 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
VDE certificate of conformity
DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01
DIN EN 60950 (VDE 0805): 2001-12; EN 60950: 2000
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14
13
12
11
10
9
V
V
V
V
V
OA
OB
IC
V
OC
V
IORM = 560 V peak working voltage
NC
NC
CTRL
APPLICATIONS
CTRL
1
1
2
General-purpose multichannel isolation
SPI® interface/data converter isolation
RS-232/RS-422/RS-485 transceiver
Industrial field bus isolation
GND
GND
2
Figure 2. ADuM1311
GENERAL DESCRIPTION
The ADuM131x1 are 3-channel digital isolators based on
Analog Devices, Inc. iCoupler® technology. Combining high
speed CMOS and monolithic air core transformer technology,
these isolation components provide outstanding performance
characteristics superior to alternatives such as optocoupler devices.
channel densities and more options for channel directionality.
The ADuM131x isolators provide three independent isolation
channels in a variety of channel configurations and data rates
up to 10 Mbps (see the Ordering Guide). 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 allow the user to predetermine the default
output state in the absence of input VDD1 power with a simple
control pin. Unlike other optocoupler alternatives, the ADuM131x
isolators have a patented refresh feature that ensures dc correctness
in the absence of input logic transitions and during power-up/
power-down conditions.
By avoiding the use of LEDs and photodiodes, iCoupler devices
remove the design difficulties commonly associated with optocou-
plers. The typical optocoupler concerns regarding uncertain
current transfer ratios, maximum operating temperature, and
lifetime effects are eliminated with the simple iCoupler digital
interfaces and stable performance characteristics. The need for
external drivers and other discrete components is eliminated
with these iCoupler products. Furthermore, iCoupler devices
consume one-tenth to one-sixth the power of optocouplers at
comparable signal data rates. The iCoupler also offers higher
1 Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075 329. Other patents
pending.
Rev. F
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
www.analog.com
Fax: 781.461.3113 ©2004–2007 Analog Devices, Inc. All rights reserved.
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