Analog Devices Inc. ADuM22xN Dual-Channel Digital Isolators

Analog Devices ADuM220N/ADuM221N/ADuM225N/ADuM226N Dual-Channel Digital Isolators offer a maximum 13ns propagation delay and less than 3ns pulse width distortion (PWD) at 5V operation. The isolators provide high 100kV/µs common-mode transient immunity and tight channel matching at 3.0ns maximum. The isolators’ data channels are independent and available in a variety of configurations. The data channels have a 150Mbps maximum data rate and a 5.0kVrms withstand voltage rating.

The ADuM220N/ADuM221N/ADuM225N/ADuM226N isolators operate on either side of a supply voltage ranging from 1.8V to 5V. The capability to operate on either side of the supply voltage enables voltage translation functionality across the isolation barrier and compatibility with lower voltage systems.

Based on iCoupler® technology, the ADuM220N/ADuM221N/ADuM225N/ADuM226N isolators ensure DC correctness in the absence of input logic transitions. Additionally, the isolators feature two different fail-safe options. The fail-safe options allow the outputs to transition to a predetermined state when the input power supply is not applied or the inputs are disabled.


  • High common-mode transient immunity: 100kV/μs
  • High robustness to radiated and conducted noise
  • 150Mbps maximum data rate
  • Safety and regulatory approvals (pending)
    • UL recognition: 5000Vrms for 1 minute per UL 1577CSA
    • Component Acceptance Notice 5A
    • VDE certificate of conformity
      • DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
      • VIORM = 849V peak
      • 10000V peak surge/impulse voltage rating
    • CQC Certification per GB4943.1-2011
  • Low propagation delay: 13ns maximum for 5V operation, 15ns maximum for 1.8V operation
  • Backward compatible
  • Low dynamic power consumption
  • 1.8V to 5V level translation
  • High-temperature operation: 125°C maximum
  • Fail-safe high or low options
  • 8-lead/16-lead, RoHS compliant SOIC packages


  • General-purpose multi-channel isolation
  • Industrial field bus isolation

Functional Block Diagrams

Publicado: 2016-10-26 | Atualizado: 2022-03-11