The ADuM2250/ADuM2251 are hot swappable digital isolators with nonlatching bidirectional communication channels and are compatible with I2C interfaces. This eliminates the need for splitting I2C signals into separate transmit and receive signals for use with stand-alone optocouplers.
The ADuM2250 provides two bidirectional channels supporting a complete isolated I2C interface. The ADuM2251 provides one bidirectional channel and one unidirectional channel for those applications where a bidirectional clock is not required.
The ADuM2250/ADuM2251 contain hot swap circuitry to prevent data glitches when an unpowered card is inserted onto an active bus.
These isolators are based on iCoupler® chip-scale transformer technology from Analog Devices, Inc. iCoupler is a magnetic isolation technology with functional, performance, size, and power consumption advantages compared to optocouplers. The ADuM2250/ADuM2251 integrate iCoupler channels with semiconductor circuitry to enable a complete, isolated I2C interface provided in a small form-factor.Applications
An Overview of the iCoupler family of products is available.
Technical Article: IEC 60601-1-Compliant Digital Isolators with iCoupler Technology
For additional ADI Healthcare Products and related information, please visit www.analog.com/healthcare.
|Title||Content Type||File Type|
|ADuM2250/ADuM2251: Hot-Swappable, Dual I2C Isolators, 5 kV Data Sheet (Rev C, 05/2014) (pdf, 302 kB)||Data Sheets|
|AN-0971: Recommendations for Control of Radiated Emissions with isoPower Devices (pdf, 406 kB)||Application Notes|
|AN-913: Isolating I2C Interfaces (pdf, 280 kB)||Application Notes|
|AN-727: iCoupler® Isolation in RS-485 Applications (pdf, 282 kB)||Application Notes|
|AN-740: iCoupler® Isolation in RS-232 Applications (pdf, 716 kB)||Application Notes|
|AN-770: iCoupler® Isolation in CAN Bus Applications (pdf, 234 kB)||Application Notes|
|AN-793: ESD/Latch-Up Considerations with iCoupler® Isolation Products (pdf, 246 kB)||Application Notes|
|AN-825: Power Supply Considerations in iCoupler Isolation Products (pdf, 181 kB)||Application Notes|
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.
|Creepage Requirements for Medical Applications (pdf, 588 kB)||Technical Articles|
Inside iCoupler® Technology:ADuM347x PWM Controller and Transformer Driver with Quad-Channel Isolators Design Summary
(pdf, 291 kB)
By Flow Zhao, Design Engineer
NAppkin Note: Lowering the Power of the ADuM524x
(pdf, 223 kB)
By Mark Cantrell, Senior Applications Engineer
Micro-Transformers Provide Signal and Power Isolation for Hybrid Electric Vehicles
(pdf, 234 kB)
By Baoxing Chen, Sr. Staff Engineer, Analog Devices, Inc.
High Speed Digital Isolators Using Microscale On-Chip Transformers
(pdf, 2717 kB)
By Baoxing Chen, John Wynne, and Ronn Kliger
iCoupler® Products with isoPower™ Technology: Signal and Power Transfer Across Isolation Barrier Using Microtransformers
(pdf, 1306 kB)
By Baoxing Chen
Microtransformer Isolation Benefits Digital Control
by Dr. Baoxing Chen, Analog Devices, Inc. (Power Electronics Technology, October 2008)
Medical Devices Demand Stringent Isolation Techniques
|Digital Isolator Product Selection and Resource Guide (pdf, 640 kB)||Product Selection Guide|
|Analog Devices Achieves Major Milestone by Shipping 1 Billionth Channel of iCoupler Digital Isolation (19 Sep 2013)||Press Releases||HTML|
ADuM125x/ADuM225x Dual-Channel, Hot-Swappable, I2C® Bidirectional Digital Isolators with up to 5 kV Isolation
(pdf, 1493 kB)
The ADuM125x/ADuM225x are dual-channel bi-directional I2C digital isolators that are hot-swappable and capable of data rates up to 1MHz.
2008 Medical Solution Profile
(pdf, 126 kB)
High Performance ICs for Medical Imaging, Patient Monitoring, and Instrumentation
|iCoupler Digital Isolators Qualified for Automotive Applications||Overview||HTML|
|isoPower® - Isolated dc-to-dc Power in the smallest Package||Overview||HTML|
|How do I learn about new iCoupler products?||FAQs/RAQs||HTML|
|Are iCoupler products Pb-free?||FAQs/RAQs||HTML|
|Can I replace an optocoupler with an iCoupler product in an existing design?||FAQs/RAQs||HTML|
|What are some of the distinguishing features of the iCoupler products?||FAQs/RAQs||HTML|
|What communications protocols are supported by iCoupler products?||FAQs/RAQs||HTML|
|What are the different types of iCoupler products?||FAQs/RAQs||HTML|
|Do iCoupler products have VDE certification for reinforced insulation?||FAQs/RAQs||HTML|
|With which regulatory standards do iCoupler products comply?||FAQs/RAQs||HTML|
|How much isolation can iCoupler products provide?||FAQs/RAQs||HTML|
|What are the benefits of iCoupler technology?||FAQs/RAQs||HTML|
|What is iCoupler technology?||FAQs/RAQs||HTML|
|What types of technologies have been used to provide isolation?||FAQs/RAQs||HTML|
|What are optocouplers? What is optical isolation?||FAQs/RAQs||HTML|
|What is capacitive isolation?||FAQs/RAQs||HTML|
|What regulatory standards address isolation products?||FAQs/RAQs||HTML|
|What is isolation? Why is it needed?||FAQs/RAQs||HTML|
|What are common applications that use isolation?||FAQs/RAQs||HTML|
|How is isolation specified?||FAQs/RAQs||HTML|
|What is isolation rating?||FAQs/RAQs||HTML|
|What is the relationship between working voltage and isolation rating?||FAQs/RAQs||HTML|
|What is the difference between basic and double (or reinforced) insulation levels?||FAQs/RAQs||HTML|
|What are transient immunity and common-mode rejection?||FAQs/RAQs||HTML|
|What other parameters are important when considering an isolation device?||FAQs/RAQs||HTML|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
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.