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  • ADuM1440: FAQ

    GenevaCooper
    GenevaCooper

    FAQ

    • 3 months ago
    • Interface and Isolation
    • Documents
  • What's the difference between the ADuM1440/41/42 and the ADuM1445/46/47?

    GenevaCooper
    GenevaCooper

    Q 

    What’s the difference between the ADuM1440/41/42 and the ADuM1445/46/47?

     

    A 

    All devices in the family contain a refresh circuit to guarantee dc correctness
    at power up. If no pulses are received on the secondary side of the transformer
    for…

    • 3 months ago
    • Interface and Isolation
    • Documents
  • ADuM144x Low Power Digital Isolators:  What's the Difference between ADuM1440/41/42 and ADuM1445/46/47?

    GenevaCooper
    GenevaCooper

    All devices in the family contain a refresh circuit to guarantee dc correctness at power up. If no pulses are received on the secondary side of the transformer for approximately 200 µs, the input side is assumed to be unpowered or nonfunctional…

    • 3 months ago
    • Interface and Isolation
    • Documents
  • Can a ADUM5401 (power+4ch) feed a ADM3311 (8ch RS232) plus a ADUM1440 (iso 4ch) in a robust way?

    drso
    drso

    We have a design proposal for a 8 ch power and data isolated RS232 interface using 3 Analog Devices circuits:

    • 3.3V/3.3V system
    • ADM3311 3/5 ch RS232 driver
    • ADUM5401 isopower and 4ch (3/1) data
    • ADUM1440 isodata 4ch (0/4) data micropower

    5401…

    • Answered
    • over 7 years ago
    • Interface and Isolation
    • Q&A
  • Will there be dual versions of the ADuM144X family

    GenevaCooper
    GenevaCooper

    Q 

    Will there be dual versions of the ADuM144X family

     

    A 

    Yes, the soon to be announced ADuM1240/41/45/46 family provides a dual-channel
    footprint with the same performance as the ADuM144X family. These will be
    available in Q2 2014.

    • 3 months ago
    • Interface and Isolation
    • Documents
  • What is the refresh frequency of the ADuM144X family?

    GenevaCooper
    GenevaCooper

    Q 

    What is the refresh frequency of the ADuM144X family?

     

    A 

    The refresh frequency is dependent on temperature and input supply voltage, and
    can range from 50 µs to115 µs over all conditions. Refer to the data sheet for
    typical characteristic…

    • 3 months ago
    • Interface and Isolation
    • Documents
  • input voltage levels are recommended?

    GenevaCooper
    GenevaCooper

    Q 

    What input voltage levels are recommended?

     

    A 

    The ADuM144X family contains Schmitt trigger input buffers, which provide
    hysteresis for noise rejection. During an input transition a Schmitt trigger
    will introduce a small shoot-through current while…

    • 3 months ago
    • Interface and Isolation
    • Documents
  • I set EN1 and EN2 high to disable the internal refresh and watchdog for lowest operating power. Is DC correctness guaranteed in this state?

    GenevaCooper
    GenevaCooper

    Q 

    I set EN1 and EN2 high to disable the internal refresh and watchdog for lowest
    operating power. Is DC correctness guaranteed in this state?

     

    A 

    No, an input transition (high to low or low to high) is required to guarantee
    that the ADuM144X output…

    • 3 months ago
    • Interface and Isolation
    • Documents
  • glitch filter width of the ADuM144X family?

    GenevaCooper
    GenevaCooper

    Q 

    What is the glitch filter width of the ADuM144X family?

     

    A 

    • 3 months ago
    • Interface and Isolation
    • Documents
  • ADuM for >2kV voltage

    GenevaCooper
    GenevaCooper

    Q 

    we would like to use Your “Digital Isolators” (ADuM...) in our applications.
    But we have an operating input/output-voltage difference of more than 2KV,
    which is not supported by the “Digital Isolators”. Will You have such parts in …

    • 3 months ago
    • Interface and Isolation
    • Documents
>
 
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