ADUM3100:  Digital Isolator, Enhanced System-Level ESD Reliability

The ADuM3100* is a digital isolator based on the Analog Devices, Inc. iCoupler® technology. Combining high speed CMOS and monolithic transformer technology, this isolation component provides ...More

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ADUM3100:  Digital Isolator, Enhanced System-Level ESD Reliability

Product Description

The ADuM3100* is a digital isolator based on the Analog Devices, Inc. iCoupler® technology. Combining high speed CMOS and monolithic transformer technology, this isolation component provides outstanding performance characteristics superior to alternatives, such as optocoupler devices.

Configured as a pin-compatible replacement for existing high speed optocouplers, the ADuM3100 supports data rates as high as 25 Mbps and 100 Mbps.

The ADuM3100 operates with a voltage supply ranging from 3.0 V to 5.5 V, boasts a propagation delay of <18 ns and an edge asymmetry of <2 ns, and is compatible with temperatures up to 105°C. It operates at very low power, less than 2.0 mA of quiescent current (sum of both sides), and a dynamic current of less than 160 μA per Mbps of data rate. Unlike other optocoupler alternatives, the ADuM3100 provides dc correctness with a patented refresh feature that continuously updates the output signal.

The ADuM3100 is offered in two grades. The ADuM3100AR and ADuM3100BR can operate up to a maximum temperature of 105°C and support data rates up to 25 Mbps and 100 Mbps, respectively.

In comparison to the ADuM1100 digital isolator, the ADuM3100 contains various circuit and layout changes to provide increased capability relative to system-level IEC 61000-4-× testing (ESD/burst/surge). The precise capability in these tests for either the ADuM1100 or ADuM3100 is strongly determined by the design and layout of the user’s board or module. For more information, see Application Note AN-793, ESD/Latch-Up Considerations with iCoupler® Isolation Products.

Applications

  • Digital fieldbus isolation
  • Opto-isolator replacement
  • Computer-peripheral interface
  • Microprocessor system interface
  • General instrumentation and data acquisition

    • * Protected by U.S. Patents 5,952,849; 6,525,566; 6,922,080; 6,903,578; 6,873,065; 7,075,329 and other pending patents.

    Data Sheet, Rev. B, 6/07

    Features

    • Enhanced system-level ESD performance per IEC 61000-4-x
    • Compatible with 3.3 V and 5.0 V operation/level translation

    Low power operation

    • 5 V operation
      2.0 mA maximum @ 1 Mbps
      5.6 mA maximum @ 25 Mbps
      18 mA maximum @ 100 Mbps
    • 3.3 V operation
      1.1 mA maximum @ 1 Mbps
      4.2 mA maximum @ 25 Mbps
      8.3 mA maximum @ 50 Mbps
    • 105°C maximum operating temperature
    • High data rate: dc to 100 Mbps (NRZ)
    • RoHS-compliant, 8-lead SOIC
    • High common-mode transient immunity: >25 kV/μs

    Safety and regulatory information

    • UL recognized: 2500 V rms for 1 minute per UL 1577
    • CSA Component Acceptance Notice #5A
    • VDE Certificate of Conformity
      DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12
      VIORM = 560 V peak

    Diagrams

    ADuM3100 Diagram
    Functional Block Diagram for ADuM3100

    Specifications

    Max Operating Temp (°C) 105Deg
    Insulation Rating (kVrms) 2.5kV rms
    # Ch 1
    Pulse Width Distort (ns) 2ns
    Max Prop Delay (ns) 18ns
    Min Output Voltage (V) 3V
    Max Output Voltage (V) 5.5V
    Output Default State High

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    Part# Features # Ch Max Data Rate(Mbps) Resolution (Bits) Insulation Rating (kVrms) Isolation Voltage (Vrms) Max Operating Temp (°C) Pulse Width Distort (ns) Max Prop Delay (ns) Pos Supply Min Output Voltage (V) Max Output Voltage (V) Output Default State Serial Clock Package Output Power (mW) iCouplerType Price* (1000-4999)
    AD7400 Isolated Sigma-Delta Modulator - 10 16 - - - - - +4.5V to +5.5V - - - - 16-Lead SOIC - - $4.05
    AD7401 Isolated Sigma-Delta Modulator - 10 16 - - - - - +4.5V to +5.5V - - - - 16-Lead SOIC - - $4.05
    ADM2483 RS-485 Transceiver/Half Duplex 1 0.5 - 2.5 - 85 - - +2.7V to +5.5V 1.5 5 Z - 16-Lead SOIC - - $3.04
    ADM2485 RS-485 Transeiver 1 16 - 2.5 - 85 - - +2.7V to +5.5V 2.1 5 Z - 16-Lead SOIC - - $5.57
    ADM2486 RS-485 Transceiver/Half Duplex w/ Transformer Driver 1 20 - 2.5 - 85 - - +2.7V to +5.5V - - Z - 16-Lead SOIC - - $5.04
    ADM2490E RS-485 Transceiver/Full Duplex 1 16 - 5 - 105 - - +2.7V to +5.5V - - High - 16-Lead SOIC - - $4.55
    ADUM1100 Standard Digital Isolator 1 100 - 2.5 2.5 125 2 18