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ADUM1281WBRZ

更新时间： 2024-11-18 12:36:11

品牌	Logo	应用领域
亚德诺 - ADI		驱动程序和接口接口集成电路光电二极管
页数	文件大小	规格书
20页	421K
描述
3 kV RMS Dual Channel Digital Isolators

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ADUM1281WBRZ 数据手册

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

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 temperature operation: 125°C

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). Industrial grade models operate with

the supply voltage on either side ranging from 2.7 V to 5.5 V

while automotive grades operate from 3.0 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

_IORM= 560 V peak

Qualified for automotive applications

APPLICATIONS

General-purpose multichannel isolation

Data converter isolation

Industrial field bus isolation

Hybrid electric vehicles, battery monitor, and motor drive

For more information on safety and regulatory approvals, go to

http://www.analog.com/icouplersafety.

FUNCTIONAL BLOCK DIAGRAMS

ADuM1280/

ADuM1281/

ADuM1286

DD1

DD2

DD1

DD2

ADuM1285

ENCODE

DECODE

ENCODE

DECODE

ENCODE

GND

Figure 1. ADuM1280/ADuM1285

Figure 2. ADuM1281/ADuM1286

¹Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.

Rev. A Document Feedback

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.

Technical Support

www.analog.com

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