Based on the iCoupler^® and isoPower^® chip scale transformertechnology, the ADM3260 is a hot swappable digital and powerisolator with two nonlatching, bidirectional communicationchannels, supporting a complete isolated I²C interface, and anintegrated isolated dc-to-dc converter, supporting up to150 mW of isolated power conversion.

iCoupler is a chip scale transformer technology with functional,performance, size, and power consumption advantages ascompared to optocouplers. The bidirectional I²C channels eliminate the need for splitting I²C signals into separate transmitand receive signals for use with standalone optocouplers.

Based on the Analog Devices, Inc., isoPower technology, theon-chip isolated dc-to-dc converter provides a regulated, isolatedvoltage of 3.15 V to 5.25 V with up to 150 mW of output power.

With the ADM3260, the iCoupler and isoPower channels, alongwith the I²C transceivers, can be integrated with semiconductorcircuitry, which enables a complete isolated I²C interface andallows the power converter to be implemented in a small formfactor. The ADM3260 is available in 20-lead SSOP package andhas an operating temperature range of −40°C to+105°C.

isoPower uses high frequency switching elements to transfer powerthrough its transformer. Special care must be taken during printedcircuit board (PCB) layout to meet emissions standards. See theAN-0971 Application Note for board layout recommendations

Applications

• Isolated I²C, SMBus, and PMBus interfaces
• Multilevel I²C interfaces
• Central office switching
• Telecommunication and data communication equipment
• −48 V distributed power systems
• −48 V power supply modules
• Networking

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.