ADUM1251

Hot Swappable Dual I2C Isolator
Manufactured by:

Product Details

The ADuM1250/ADuM1251 are hot swappable digital isolators with nonlatching, bidirectional communication channels compatible with I2C® interfaces. This eliminates the need for splitting I2C signals into separate transmit and receive signals for use with standalone optocouplers.

The ADuM1250 provides two bidirectional channels, supporting a complete isolated I2C interface. The ADuM1251 provides one bidirectional channel and one unidirectional channel for those applications where a bidirectional clock is not required.

Both the ADuM1250 and ADuM1251 contain hot swap circuitry to prevent glitching data 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 as compared to optocouplers. With the ADuM1250/ADuM1251, iCoupler channels can be integrated with semiconductor circuitry, which enables a complete isolated I2C interface to be implemented in a small form factor.

Applications

  • Isolated I2C, SMBus, or PMBus interfaces
  • Multilevel I2C interfaces
  • Power supplies
  • Networking
  • Power-over-Ethernet

Product Lifecycle

checked Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits

X +

Product Details

The ezLINX™ iCoupler® Isolated Interface Development Environment provides developers with a cost-effective, plug and play method for evaluation eight physical layer, digitally-isolated communication standards (USB, RS-422, RS-485, RS-232, CAN, SPI, I2C, and LVDS). The Blackfin® ADSP-BF548 processor is used to run the uCLinux operating system and allows for easy customization through the open source hardware and software platform. Development time is significantly reduced for embedded designers and system architects who are designing and evaluating isolated communication standards. The interfaces on ezLINX use ADI's isolated transceivers with integrated iCoupler® and isoPower® digital isolator technology.

,

The ezLINX™ iCoupler® Isolated Interface Development Environment provides developers with a cost-effective, plug and play method for evaluation eight physical layer, digitally-The ezLINX™ iCoupler® Isolated Interface Development Environment provides developers with a cost-effective, plug and play method for evaluation eight physical layer, digitally-The ezLINX™ iCoupler® Isolated Interface Development Environment provides developers with a cost-effective, plug and play method for evaluation eight physical layer, digitally-The ezLINX™ iCoupler® Isolated Interface Development Environment provides developers with a cost-effective, plug and play method for evaluation eight physical layer, digitally-

Documentation

X +

Tools & Simulations

X +

Reference Materials

X +

Design Resources

X +

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

ADUM1251 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

Discussions

X+

Didn't find what you were looking for?

Reviews

X+

Overview

3 Reviews
3 out of 3 (100%) customers recommend this product.
Quality
1
2
3
4
5
Reliability
1
2
3
4
5
Features
1
2
3
4
5

Most Helpful Review

by krasi533513
ADUM1251 is interesting product for industrial applications with I2C bus. The output sink capability of 30mA is essential for stable communication in the real field situation, and it would be great if it could be more than 30mA. So I think ADUM1251 is very useful product.

Most Recent Review

by Blaise70
I have used these ICs for isolating I2C and one wire communication lines. It is really easy to work with them. No additional parts required. (Only decoupling.) They provide reliable communication and has no side effects.

All Reviews

by Blaise70, 14 Mar 14
Easy to use digital isolator
I have used these ICs for isolating I2C and one wire communication lines. It is really easy to work with them. No additional parts required. (Only decoupling.) They provide reliable communication and has no side effects.
Was this Helpful?Helpful(0)
by Venkat, 5 Aug 13
Amazing product.
Innovative product very easy to use. A great company to back their products.
Was this Helpful?Helpful(0)
by krasi533513, 5 Jul 13
Interesting product for I2C bus
ADUM1251 is interesting product for industrial applications with I2C bus. The output sink capability of 30mA is essential for stable communication in the real field situation, and it would be great if it could be more than 30mA. So I think ADUM1251 is very useful product.
Was this Helpful?Helpful(0)

Sample & Buy

X+
Back
Check Inventory

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.


Price Table Help

 
Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.