Overview

Features and Benefits

  • Ultralow power operation
    • 3.3 V operation (typical)
      • 5.6 μA per channel quiescent current, refresh enabled
      • 0.3 μA per channel quiescent current, refresh disabled
      • 148 μA/Mbps per channel typical dynamic current
    • 2.5 V operation (typical)
      • 3.1 μA per channel quiescent current, refresh enabled
      • 0.1 μA per channel quiescent current, refresh disabled
      • 117 μA/Mbps per channel typical dynamic current
  • Small, 16-lead QSOP and 20-Lead SSOP
  • Bidirectional communication
  • Up to 2 Mbps data rate (NRZ)
  • High temperature operation: 125°C
  • High common-mode transient immunity: >25 kV/μs
  • Regulatory Information
    • UL 1577 component recognition program
      • 2500 V rms for 1 minute per UL 1577 QSOP package
      • 3750V rms for 1 minute per UL 1577 SSOP package
    • CSA Component Acceptance Notice 5A
    • VDE certificate of conformity
      • DIN VDE V 0884-11:2017-01
      • VIORM = 565 VPEAK QSOP package
      • VIORM = 645 VPEAK SSOP package
    • IECEx and ATEX intrinsic safety
      • Sira 0518 II 1G Ex ia IIC Ga
  • Dual-channel products available

Product Details

The ADuM1440/ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447 are micropower, 4-channel digital isolators based on the Analog Devices, Inc., iCoupler® technology. Combining high speed, complementary metal oxide semiconductor (CMOS) and monolithic air core transformer technologies, these isolation components provide outstanding performance characteristics superior to the alternatives, such as optocoupler devices. As shown in Figure 3 in the data sheet, in standard operating mode, when ENx = 0 (internal refresh enabled), the current per channel is less than 10 μA. When ENx = 1 (internal refresh disabled), the current per channel drops to less than 1 μA.

The ADuM1440/ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447 family of quad 2.5 kV digital isolation devices are packaged in a small 16-lead QSOP and 20-lead SSOP, freeing almost 70% of board space compared to isolators packages in wide body SOIC packages.

The devices withstand high isolation voltages and meet regulatory requirements, such as UL and CSA standards. In addition to the space savings, the ADuM1440/ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447 operate with supplies as low as 2.25 V.

Despite the low power consumption, all models of the ADuM1440/ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447 provide low, pulse width distortion at <8 ns. In addition, every model has an input glitch filter to protect against extraneous noise disturbances.

APPLICATIONS

  • General-purpose, low power multichannel isolation
  • 1 MHz, low power peripheral interface (SPI)
  • 4 mA to 20 mA loop process controls

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Documentation & Resources

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  • Data Sheets (1)
  • User Guides (1)
  • Safety and Regulatory Compliance (1)
  • Product Selection Guide (1)
  • Solutions Bulletins & Brochures (1)
  • Videos (3)
  • Press Releases (2)
  • Technical Articles (1)
  • Webcasts (2)
  • Tools & Simulations

    IBIS Models

    ADUM1440 IBIS Models

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