ADM3260:  Hot Swappable, Dual I2C Isolators with Integrated DC-to-DC Converter

Product Details

Product Status:Recommended for New Designs

Based on the iCoupler® and isoPower® chip scale transformer technology, the ADM3260 is a hot swappable digital and power isolator with two nonlatching, bidirectional communication channels, supporting a complete isolated I2C interface, and an integrated isolated dc-to-dc converter, supporting up to 150 mW of isolated power conversion.

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

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

With the ADM3260, the iCoupler and isoPower channels, along with the I2C transceivers, can be integrated with semiconductor circuitry, which enables a complete isolated I2C interface and allows the power converter to be implemented in a small form factor. The ADM3260 is available in 20-lead SSOP package and has an operating temperature range of −40°C to+105°C.

isoPower uses high frequency switching elements to transfer power through its transformer. Special care must be taken during printed circuit board (PCB) layout to meet emissions standards. See the AN-0971 Application Note for board layout recommendations.


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


  • isoPower integrated, isolated dc-to-dc converter:
    Regulated 3.15 V or 5.25 V output
    Up to 150 mW output power
    High common-mode transient immunity: >25 kV/μs
  • iCoupler integrated I2C digital isolator
    Bidirectional I2C communication
    3.0 V to 5.5 V supply/logic levels
    Open-drain interfaces
    Suitable for hot swap applications
    30 mA current sink capability
    1000 kHz operation
  • 20-lead SSOP package with 5.3 mm creepage
  • High temperature operation: 105°C
  • Safety and regulatory approvals
    UL recognition (pending)
    2500 V rms for 1 minute per UL 1577
  • CSA Component Acceptance Notice #5A (pending)
  • VDE certificate of conformity (pending)
    DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
    VIORM = 560 peak

Functional Block Diagram for ADM3260

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Price, packaging, availability

ADM3260 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
ADM3260ARSZ Status: Production 20 ld SSOP 20 Ind Tube, 66 $3.99 $2.99 Y  Material Info PCN Purchase Sample
ADM3260ARSZ-RL7 Status: Production SSOP 5.3 MM 20 Ind Reel, 500 - - Y  Material Info Notify Me Purchase
Price Table Help

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.

ADM3260 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
EVAL-ADM3260EBZ Status: Production Evaluation Board $100.00 Yes -

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.

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