Add to Signal Chain Designer

ADUM1281:  3kV rms, Default High, Dual-Channel Digital Isolators (1/1 Channel Directionality)

Product Details

Product Status:Recommended for New Designs

The ADuM128x are dual-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 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 5ns for C grade. The two channels of ADuM128x are independent isolation channels and are available in two channel configurations with 3 different data rates up to 100Mbps (see the Ordering Guide). All models operate with the supply voltage on either side ranging from 2.7 V to 5.5V, 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.

APPLICATIONS

  • General-purpose multichannel isolation
  • Data converter isolation
  • Industrial field bus isolation

FEATURES and BENEFITS

  • Up to 100 Mbps data rate (NRZ)
  • Low propagation delay:
    20 ns typical
  • Low dynamic power consumption
  • Bidirectional communication
  • 3V to 5V level translation
  • 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
  • See data sheet for additional features

Functional Block Diagram for ADuM1281

Documentation

Title Content Type File Type
ADuM1280/ADuM1281/ADuM1285/ADuM1286: 3 kV RMS Dual Channel Digital Isolators Datasheet (Rev B, 03/2014) (pdf, 336 kB) Data Sheets PDF
Solving Isolation Challenges in Power Conversion Applications
This webcast will present solutions to isolation challenges in power conversion applications. Among the topics to be discussed are the limitations of traditional methods of isolation (such as utilization of optocouplers and pulse transformers) vs. more efficient and cost effective solutions that utilize digital isolators. If you are currently using optocouplers and pulse transformers, this is a webcast you should attend.
Webcasts WEBCAST
Analog Devices Achieves Major Milestone by Shipping 1 Billionth Channel of iCoupler Digital Isolation (19 Sep 2013) Press Releases HTML
Digital Isolator Product Selection and Resource Guide  (pdf, 640 kB) Product Selection Guide PDF
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADuM1281 IBIS Models IBIS Models HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

ADUM1281 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADUM1281ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $1.06 $0.88 Y  Material Info Notify Me Purchase Sample
ADUM1281ARZ-RL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $0.88 Y  Material Info Notify Me Purchase
ADUM1281BRZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $1.36 $1.12 Y  Material Info Notify Me Purchase Sample
ADUM1281BRZ-RL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $1.12 Y  Material Info Notify Me Purchase
ADUM1281CRZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $1.57 $1.30 Y  Material Info Notify Me Purchase Sample
ADUM1281CRZ-RL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $1.30 Y  Material Info Notify Me Purchase
ADUM1281WARZ Status: Production SOIC 150 MIL 8 Auto Tube, 98 - - Y  Material Info Notify Me Sample
ADUM1281WARZ-RL7 Status: Production SOIC 150 MIL 8 Auto Reel, 1000 - - Y  Material Info Notify Me Contact ADI
ADUM1281WBRZ Status: Production SOIC 150 MIL 8 Auto Tube, 98 - - Y  Material Info Notify Me Sample
ADUM1281WBRZ-RL7 Status: Production SOIC 150 MIL 8 Auto Reel, 1000 - - Y  Material Info Notify Me Contact ADI
ADUM1281WCRZ Status: Production SOIC 150 MIL 8 Auto Tube, 98 - - Y  Material Info Notify Me Sample
ADUM1281WCRZ-RL7 Status: Production SOIC 150 MIL 8 Auto Reel, 1000 - - Y  Material Info Notify Me Contact ADI
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


沪ICP备09046653号
content here.
content here.

Review this Product

Close