Hot-Swappable Dual IC Isolators, 5 kV

The ADuM2250 / ADuM2251 are hot swappable digital isolators with non-latching, 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

* Isolated I2C, SMbus, or PMBus Interfaces

* Multilevel I2C interfaces

* Power supplies

* Networking

* Power over Ethernet

* 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

* 16-lead SOIC wide body package version (RW-16)

* High temperature operation: 105°C