Analog Devices Inc. ADuM4154 SPIsolator Digital Isolators

Analog Devices Inc. ADuM4154 SPIsolator Digital Isolators are designed as 5kVrms, 7-Channel, SPIsolator™ digital isolators optimized for a serial peripheral interface (SPI). Based on the Analog Devices Inc., iCoupler® chip-scale transformer technology, the low propagation delay and jitter in the CLK, MO/SI, MI/SO, and SS channels support SPI clock rates of up to 17MHz. ADuM4154 also provides a slave select multiplexing system that allows up to four slave devices to be serviced from one isolator. The slave select system propagates to the desired output with full propagation speed, allowing tight timing control. The isolated SS multiplexer is addressed through a 250kbps low-speed dual port with 2.5μs of setup time. The design makes the ADuM4154 digital isolators ideal for industrial programmable logic controllers (PLCs) and sensor isolation applications.


  • Supports up to 17MHz SPI clock speed
  • 4 high speed, low propagation delay, SPI signal isolation channels
  • Supports up to 4 slave devices
  • 20-lead SSOP package with 5.1mm creepage 
  • High-temperature operation: 125°C
  • High common-mode transient immunity: >25kV/µs
  • Safety and regulatory approvals
    • UL recognition per UL 1577 (pending)
      • 3750Vrms for 1 minute
    • CSA Component Acceptance Notice 5A (pending)
    • VDE certificate of conformity (pending)
      • DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
      • VIORM = 560V peak


  • Industrial programmable logic controllers (PLCs)
  • Sensor isolation

Block Diagram

Analog Devices Inc. ADuM4154 SPIsolator Digital Isolators
Publicado: 2015-01-30 | Atualizado: 2022-03-11