Analog Devices Inc. ADuM4151 SPIsolator Digital Isolators

Analog Devices ADuM4151 SPIsolator™ Digital Isolators consists of 7-channel dedicated 5kVrms digital isolators optimized for isolated serial peripheral interfaces (SPIs) with 2/1 aux channel directionality. Developed using Analog Devices, Inc., iCoupler® chip-scale transformer technology, the low propagation delay in the CLK, MO/SI, MI/SO, and SS SPI bus signals support SPI clock rates of up to 17MHz. These channels operate with a 14ns propagation delay and 1ns jitter to optimize timing for SPI. The ADuM4151 isolators also include two additional independent low data rate isolation channels, one channel in each direction. Data in the slow channels are sampled and serialized for a 250kbps data rate with 2.5μs of jitter.


  • Supports up to 17MHz SPI clock speed
  • 4 high speed, low propagation delay, SPI signal isolation channels
  • Three 250kbps data channels
  • 20-lead SOIC_IC package with 8.3mm creepage
  • High-temperature operation: 125°C
  • High common-mode transient immunity: >25kV/μs
  • Safety and regulatory approvals
    • UL recognition per UL 1577
      • 5000Vrms for 1 minute SOIC long package
    • CSA Component Acceptance Notice 5A
    • VDE certificate of conformity (pending)
      • DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
      • Maximum working insulation voltage (VIORM): 846V peak


  • Industrial programmable logic controllers (PLCs)
  • Sensor isolation
Gepubliceerd op: 2015-01-30 | Bijgewerkt op: 2022-03-11