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.
5秒后页面跳转
MAX487芯片引脚图及功能、应用领域详解
IR2110驱动芯片引脚图及功能、电路图详解
74LS74是什么芯片 74LS74引脚图及功能表
CD4511芯片引脚图及功能、电路图解析
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
