1. Products
  2. Interface and Isolation
  3. Digital Isolation Technology
  4. SPI Isolators
  5. ADUM3150


Features and Benefits

  • Supports up to 40 MHz SPI clock speed in delay clock mode
  • Supports up to 17 MHz SPI clock speed in 4-wire mode
  • 4 high speed, low propagation delay, SPI signal isolation channels
  • 2 data channels at 250 kbps
  • Delayed compensation clock line
  • 20-lead SSOP with 5.1 mm creepage
  • High temperature operation: 125°C
  • High common-mode transient immunity: >25 kV/μs
  • Safety and regulatory approvals
    • UL recognition per UL 1577
      • 3750 V rms for 1 minute
    • CSA Component Acceptance Notice 5A
    • VDE certificate of conformity
      • DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
      • VIORM = 565 V peak

Product Details

The ADuM3150 is a 6-channel SPIsolator digital isolator optimized for isolated serial peripheral interfaces (SPIs). Based on the Analog Devices, Inc., iCoupler® chip scale transformer technology, the low propagation delay in the CLK, MO/SI, MI/SO, and SS SPI bus signals supports SPI clock rates of up to 17 MHz. These channels operate with 14 ns propagation delay and 1 ns jitter to optimize timing for SPI.

The ADuM3150 isolator also provides two additional independent low data rate isolation channels, one channel in each direction. Data in the slow channels is sampled and serialized for a 250 kbps data rate with 2.5 μs of jitter.

The ADuM3150 supports a delay clock output on the master side of the device. This output can be used with an additional clocked port on the master to support 40 MHz clock performance. See the Delay Clock section for more information.


  • Industrial programmable logic controllers (PLC)
  • Sensor isolation

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)

Documentation & Resources

  • View All (13)
  • Data Sheet (1)
  • Application Note (1)
  • User Guide (1)
  • Safety and Regulatory Compliance (1)
  • Webcast (2)
  • Product Selection Guide (1)
  • Circuit Note (1)
  • Video (3)
  • Technical Article (2)
  • Tools & Simulations

    IBIS Model

    Reference Designs (1)

    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.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    ADUM3150ARSZ Material Declaration Reliability Data 20-Lead SSOP
    ADUM3150ARSZ-RL7 Material Declaration Reliability Data 20-Lead SSOP
    ADUM3150BRSZ Material Declaration Reliability Data 20-Lead SSOP
    ADUM3150BRSZ-RL7 Material Declaration Reliability Data 20-Lead SSOP
    Wafer Fabrication Data

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