ADUM3441:  Quad Channel, High Speed Digital Isolators

The ADuM344x1 are four channel, digital isolators based on the Analog Devices, Inc., iCoupler® technology supporting data rates up to 150 Mbps. ...More

An Overview of the iCoupler family of products is available.

ADUM3441:  Quad Channel, High Speed Digital Isolators

Product Description

The ADuM344x1 are four channel, digital isolators based on the Analog Devices, Inc., iCoupler® technology supporting data rates up to 150 Mbps. Combining high speed CMOS and monolithic air core transformer technology, these isolation components provide outstanding performance characteristics superior to alternatives such as optocoupler devices.

By avoiding the use of LEDs and photodiodes, iCoupler devices remove the design difficulties commonly associated with optocouplers. The typical optocoupler concerns regarding uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects are eliminated with the simple iCoupler digital interfaces and stable performance characteristics. The need for external drivers and other discrete components is eliminated with these iCoupler products. Furthermore, iCoupler devices consume one-tenth to one-sixth the power of optocouplers at comparable signal data rates.

The ADuM344x isolators provide four independent isolation channels in a variety of channel configurations (see the Ordering Guide). The ADuM344x operates with the supply voltage on either side ranging from 3.0 V to 5.5 V, providing compatibility with lower voltage systems as well as enabling voltage translation functionality across the isolation barrier. In addition, the ADuM344x provides low pulse width distortion and tight channel-to-channel matching. Unlike other opto-coupler alternatives, the ADuM344x isolators have a patented refresh feature that ensures dc correctness in the absence of input logic transitions and during the power-up/power-down condition.

Applications

  • High speed multichannel isolation
  • SPI interface/data converter isolation
  • Instrumentation

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

    Data Sheet, Rev. B, 9/08

    Features

    • Low power operation
    • Bidirectional communication
    • 3.3 V/5 V level translation
    • High temperature operation: 105°C
    • High data rate: dc to 150 Mbps (NRZ)
    • Precise timing characteristics
    • High common-mode transient immunity: >25 kV/μs
    • See Data Sheet for Additional Information

    Diagrams

    ADuM3441 Diagram
    Functional Block Diagram for ADuM3441

    Specifications

    Max Operating Temp (°C) 105Deg
    Insulation Rating (kVrms) 2.5kV rms
    # Ch 4
    Pulse Width Distort (ns) 5ns
    Max Prop Delay (ns) 32ns
    Min Output Voltage (V) 3V
    Max Output Voltage (V) 5.5V
    Output Default State High

    Explore Other Products

    ADUM5200 - Dual-Channel Isolators with Integrated DC-to-DC Converter

    ADUM5202 - Dual-Channel Isolators with Integrated DC-to-DC Converter

    ADUM5000 - Isolated DC/DC Converter

    ADUM5400 - Quad-Channel Isolator with Integrated DC-to-DC Converter

    Subscribe to New Products Feed More
    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 +3V to +5.5V 3 5.5 High - 8-Lead SOIC - Standard $1.63
    ADUM1200 Standard Digital Isolator 2 25 - 2.5