iCoupler® Digital Isolator
a
ADuM1100
GENERAL DESCRIPTION
FEATURES
The ADuM1100 is a digital isolator based on Analog Devices’
iCoupler technology. Combining high speed CMOS and mono-
lithic air core transformer technology, this isolation component
provides outstanding performance characteristics superior to
alternatives such as optocoupler devices.
High Data Rate: DC to 100 Mbps (NRZ)
Compatible with 3.3 V and 5.0 V Operation/
Level Translation
125؇C Max Operating Temperature
Low Power Operation
5 V Operation
1.0 mA Max @ 1 Mbps
4.5 mA Max @ 25 Mbps
16.8 mA Max @ 100 Mbps
Configured as a pin compatible replacement for existing high speed
optocouplers, the ADuM1100 supports data rates as high as
25 Mbps and 100 Mbps.
The ADuM1100 operates with either voltage supply ranging from
3.0 V to 5.5 V, boasts a propagation delay of <18 ns and edge
asymmetry of <2 ns, and is compatible with temperatures up to
125°C. It operates at very low power, less than 0.9 mA of quiescent
current (sum of both sides), and a dynamic current of less than
160 µA per Mbps of data rate. Unlike other optocoupler alter-
natives, the ADuM1100 provides dc correctness with a patented
refresh feature that continuously updates the output signal.
3.3 V Operation
0.4 mA Max @ 1 Mbps
3.5 mA Max @ 25 Mbps
7.1 mA Max @ 50 Mbps
8-Lead SOIC Package (lead-free version available)
High Common-Mode Transient Immunity: >25 kV/s
Safety and Regulatory Information
UL Recognized
2500 V rms for 1 Minute per UL 1577
CSA Component Acceptance Notice No. 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
VIORM = 560 VPEAK
The ADuM1100 is offered in three grades. The ADuM1100AR
and ADuM1100BR can operate up to a maximum temperature
of 105°C and support data rates up to 25 Mbps and 100 Mbps,
respectively. The ADuM1100UR can operate up to a maximum
temperature of 125°C and supports data rates up to 100 Mbps.
APPLICATIONS
Digital Fieldbus Isolation
Opto-Isolator Replacement
Computer-Peripheral Interface
Microprocessor System Interface
General Instrumentation and Data Acquisition
Applications
FUNCTIONAL BLOCK DIAGRAM
V
V
DD1
DD2
D
E
N
C
O
D
E
E
C
O
D
E
V
GND
I
2
(DATA IN)
V
O
V
DD1
(DATA OUT)
UPDATE
WATCHDOG
GND
2
GND
1
ADuM1100
FOR PRINCIPLES OF OPERATION, SEE METHOD OF OPERATION,
DC CORRECTNESS, AND MAGNETIC FIELD IMMUNITY SECTION.
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, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat
may result from its use. 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: 781/326-8703
www.analog.com
© 2003 Analog Devices, Inc. All rights reserved.
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