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ADUM2250:  HOT-SWAPPABLE DUAL I2C® ISOLATORS, 5 KV

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 ...More

ADUM2250:  HOT-SWAPPABLE DUAL I2C® ISOLATORS, 5 KV

Product Description

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.

* Protected by U.S. Patents 5,952,849; 6,873,065 and 7,075,329; other patents pending


Applications

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

RESOURCES & TOOLS

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  • Bidirectional I2C communication
  • Open-drain interfaces
  • Suitable for hot swap applications
  • 30 mA current sink capability
  • 1000 KHz operation
  • 3.0 V to 5.5 V supply/logic levels
  • Wide body SOIC 16-lead package with > 8 mm creepage
  • High temperature operation: 105°C
  • Safety and regulatory approvals
  • UL recognition (pending)
  • 5000 V rms for 1 minute per UL 1577
  • CSA component acceptance notice #5A
  • # Ch: 2
  • iCouplerType: I2C
  • Max Data Rate(Mbps): 1Mbps
  • Package: 16-Lead SOIC
  • Insulation Rating (kVrms): 5kV rms
  • Max Operating Temp (°C): 105Deg
  • Pos Supply: +3V to +5.5V

Functional Block Diagram for ADUM2250

Of Note ...

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.

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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.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.