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Overview

Features and Benefits

  • Automotive versions qualified per AEC-Q100
  • Bidirectional I2C communication
  • Open-drain interfaces
  • Suitable for hot swap applications
  • 30 mA current sink capability
  • 1000 kHz operation
  • High temperature operation: 125°C
  • Safety and regulatory approvals
    • UL recognition
      2500 V rms for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A
    • VDE certificate of conformity
      DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
      VIORM = 560 V peak
  • 3.0 V to 5.5 V supply/logic levels
  • 8-lead SOIC RoHS-compliant package
  • Safety & Regulatory Compliance

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 icon-recommended 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 (1)

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Design Resources

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.

PCN-PDN Information

Discussions

ADUM1251 Discussions

RE: Latchup with ADUM1251
18 week(s) ago in Interface and Isolation
RE: ADUM1251 IDD1,IDD2
18 week(s) ago in Interface and Isolation
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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.


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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.