概览

优势和特点

  • isoPower integrated, isolated dc-to-dc converter
  • 100 mA output supply
  • Meets CISPR 32/EN550 32 Class B emission limits up to 5 Mbps at a full load on a 2-layer PCB
  • Quad dc to 100 Mbps signal isolation channels
  • 28-lead, fine pitch, SOIC with 8.3 mm minimum creepage
  • High temperature operation: 125°C maximum
  • High common-mode transient immunity: 100 kV/μs
  • Safety and regulatory approvals (pending)
    • UL recognition (pending)
      • 5000 V rms for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A (pending)
    • VDE V 0884-11 certificate of conformity (pending)
      • VIORM = 566 V peak

产品详情

The ADuM6420A/ADuM6421A/ADuM6422A1 are quad-channel digital isolators with an isoPower®, integrated, isolated dc-to-dc converter. Based on the Analog Devices, Inc., iCoupler® technology, the dc-to-dc converter provides regulated, isolated power that meets CISPR 32/EN 55032 Class B limits at a full load on a 2-layer printed circuit board (PCB) with ferrites.

The ADuM6420A/ADuM6421A/ADuM6422A eliminate the need for a separate, isolated dc-to-dc converter in 500 mW, isolated designs. The iCoupler chip scale transformer technology is used for isolated logic signals and for the magnetic components of the dc-to-dc converter. The result is a small form factor, total isolation solution.

The ADuM6420A/ADuM6421A/ADuM6422A isolators provide four independent isolation channels.

Applications

  • RS-232 transceivers
  • Power supply start-up bias and gate drives
  • Isolated sensor interfaces
  • Industrial programmable logic controllers (PLCs)

1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.

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