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ADUM1281ARZ-RL7

更新时间： 2024-11-20 07:18:43
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3 kV RMS Dual Channel Digital Isolators

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ADUM1281ARZ-RL7 数据手册

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3 kV RMS Dual Channel Digital Isolators  
Data Sheet  
ADuM1280/ADuM1281/ADuM1285/ADuM1286  
FEATURES  
GENERAL DESCRIPTION  
Up to 100 Mbps data rate (NRZ)  
Low propagation delay: 20 ns typical  
Low dynamic power consumption  
Bidirectional communication  
3 V to 5 V level translation  
High temperature operation: 125°C  
The ADuM1280/ADuM1281/ADuM1285/ADuM12861 (also  
referred to as ADuM128x in this data sheet) are dual-channel  
digital isolators based on the Analog Devices, Inc., iCoupler®  
technology. Combining high speed CMOS and monolithic air  
core transformer technology, these isolation components  
provide outstanding performance characteristics superior to  
High common-mode transient immunity: >25 kV/μs  
Default high output: ADuM1280/ADuM1281  
Default low output: ADuM1285/ADuM1286  
Narrow body, RoHS-compliant, 8-lead SOIC  
Safety and regulatory approvals (pending)  
UL recognition: 3000 V rms for 1 minute per UL 1577  
CSA Component Acceptance Notice #5A  
alternatives, such as optocoupler devices and other integrated  
couplers.  
With propagation delay at 20 ns, pulse width distortion is less  
than 2 ns for C grade. Channel-to-channel matching is tight at  
5 ns for C grade. The two channels of the ADuM128x are  
independent isolation channels and are available in two channel  
configurations with three different data rates up to 100 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 a  
voltage translation functionality across the isolation barrier.  
Unlike other optocoupler alternatives, the ADuM128x isolators  
have a patented refresh feature that ensures dc correctness in  
the absence of input logic transitions. When power is first  
applied or is not yet applied to the input side, the ADuM1280  
and ADuM1281 have a default high output, and the ADuM1285  
and ADuM1286 have a default low output.  
VDE Certificate Of Conformity  
DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12  
V
IORM = 560 V peak  
APPLICATIONS  
General-purpose multichannel isolation  
Data converter isolation  
Industrial field bus isolation  
For more information on safety and regulatory approvals, go to  
http://www.analog.com/icouplersafety.  
FUNCTIONAL BLOCK DIAGRAMS  
ADuM1280/  
ADuM1281/  
ADuM1286  
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
V
V
V
V
V
V
V
V
DD1  
DD2  
OA  
OB  
DD1  
DD2  
ADuM1285  
ENCODE  
DECODE  
DECODE  
DECODE  
ENCODE  
DECODE  
V
V
V
OA  
IA  
IB  
IA  
ENCODE  
ENCODE  
V
IB  
OB  
GND  
GND  
GND  
GND  
2
1
2
1
Figure 1. ADuM1280/ADuM1285  
Figure 2. ADuM1281/ADuM1286  
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  
rightsof third parties that may result fromits 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 andregisteredtrademarks 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  
www.analog.com  
©2012 Analog Devices, Inc. All rights reserved.  
 
 
 
 
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ADUM1281ARZ-RL7 替代型号

型号 品牌 替代类型 描述 数据表
ADUM1281ARZ ADI

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