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ADUM7440:  1 kV RMS Quad-Channel Digital Isolator

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Статус продукта:Производство

The ADuM744x1 are 4-channel digital isolators based on the Analog Devices, Inc., iCoupler® technology. Combining high speed CMOS and monolithic air core transformer technologies, these isolation components provide outstanding performance characteristics superior to the alternatives, such as optocoupler devices and other integrated couplers.

The ADuM744x family of quad 1 kV digital isolation devices is packaged in a small 16-lead QSOP. While most 4-channel isolators come in 16-lead wide SOIC packages, the ADuM744x frees almost 70% of board space and yet can still withstand high isolation voltage and meet regulatory requirements such as UL and CSA standards (pending). In addition to the space savings, the ADuM744x offers a lower price than 2.5 kV or 5 kV isolators where only functional isolation is needed.

This family, like many Analog Devices isolators, offers very low power consumption, consuming one-tenth to one-sixth the power of comparable isolators at comparable data rates up to 25 Mbps. Despite the low power consumption, all models of the ADuM744x provide low pulse width distortion (< 5 ns for C grade). In addition, every model has an input glitch filter to protect against extraneous noise disturbances.

The ADuM744x isolators provide four independent isolation channels in a variety of channel configurations and two data rates (see the Ordering Guide) up to 25 Mbps. All models operate 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. All products also have an output default high logic state in the absence of the input power.

Applications

  • General-purpose multichannel isolation
  • SPI interface/data converter isolation
  • RS-232/RS-422/RS-485 transceivers
  • Industrial field bus isolation
  • 1 Protected by U.S. Patents 5,952,849, 6,873,065 and 7,075,329. Other patents pending.

    ОСОБЕННОСТИ И ПРЕИМУЩЕСТВА

    • Small 16-lead QSOP package
    • 1000 V rms isolation rating
    • Safety and regulatory approvals (pending)
      - UL recognition
           UL 1577: 1000 V rms for 1
           minute
      - CSA component acceptance notice #5A
    • Low power operation
      (See data sheet for details)
    • Bidirectional communication
    • Up to 25 Mbps data rate (NRZ)
    • 3 V/5 V level translation
    • High temperature operation:
      105°C
    • High common-mode transient immunity: >15 kV/μs

    Functional Block Diagram

    Документация

    Наименование Тип контента Тип файлов
    ADuM7440/ADuM7441/ADuM7442: 1 kV RMS Quad-Channel Digital Isolators Data Sheet (Rev C, 02/2012) (pdf, 496 kB) Технические описания PDF
    Solving Isolation Challenges in Power Conversion Applications
    This webcast will present solutions to isolation challenges in power conversion applications. Among the topics to be discussed are the limitations of traditional methods of isolation (such as utilization of optocouplers and pulse transformers) vs. more efficient and cost effective solutions that utilize digital isolators. If you are currently using optocouplers and pulse transformers, this is a webcast you should attend.
    Webcasts WEBCAST
    UG-042: Evaluating 16-Lead SOIC and 16-Lead QSOP Digital Isolators User Guide  (pdf, 504 kB) Руководства пользователей PDF
    Functional SPI Isolation  (pdf, 680 kB) Технические статьи PDF
    Inside iCoupler® Technology:ADuM347x PWM Controller and Transformer Driver with Quad-Channel Isolators Design Summary  (pdf, 291 kB)
    By Flow Zhao, Design Engineer
    Технические статьи PDF
    NAppkin Note: Lowering the Power of the ADuM524x  (pdf, 223 kB)
    By Mark Cantrell, Senior Applications Engineer
    Технические статьи PDF
    Digital Isolator Product Selection and Resource Guide  (pdf, 640 kB) Product Selection Guide PDF
    2008 Medical Solution Profile  (pdf, 126 kB)
    High Performance ICs for Medical Imaging, Patient Monitoring, and Instrumentation
    Обзор PDF
    Industrial ICs
    Industrial ICs Solutions Bulletin, Volume 10, Issue 8
    Техническая периодика HTML
    How do I learn about new iCoupler products? FAQs/RAQs HTML
    Can I replace an optocoupler with an iCoupler product in an existing design? FAQs/RAQs HTML
    What are some of the distinguishing features of the iCoupler products? FAQs/RAQs HTML
    What communications protocols are supported by iCoupler products? FAQs/RAQs HTML
    What are the different types of iCoupler products? FAQs/RAQs HTML
    Do iCoupler products have VDE certification for reinforced insulation? FAQs/RAQs HTML
    With which regulatory standards do iCoupler products comply? FAQs/RAQs HTML
    How much isolation can iCoupler products provide? FAQs/RAQs HTML
    What are the benefits of iCoupler technology? FAQs/RAQs HTML
    What is iCoupler technology? FAQs/RAQs HTML
    What types of technologies have been used to provide isolation? FAQs/RAQs HTML
    What are optocouplers? What is optical isolation? FAQs/RAQs HTML
    What is capacitive isolation? FAQs/RAQs HTML
    What is isolation? Why is it needed? FAQs/RAQs HTML
    What are common applications that use isolation? FAQs/RAQs HTML
    How is isolation specified? FAQs/RAQs HTML
    What is isolation rating? FAQs/RAQs HTML
    What is the relationship between working voltage and isolation rating? FAQs/RAQs HTML
    What is the difference between basic and double (or reinforced) insulation levels? FAQs/RAQs HTML
    What are transient immunity and common-mode rejection? FAQs/RAQs HTML
    What other parameters are important when considering an isolation device? FAQs/RAQs HTML
    Словарь терминов Глоссарий HTML

    Средства разработки, программные модели, драйверы и ПО

    Наименование Тип контента Тип файлов
    ADuM7440 IBIS Models Модели IBIS HTML

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    SampleОбразцы / Покупка

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    EVAL-ADUMQSEBZ Статус: Prodn Evaluation Board $ 25,00 Да -

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