• ADUM1401: FAQ

    FAQ

  • ADuM1401: SPI wires

    Q 

    I need to reinforce some SPI communication bus.
    The point is I would like to want how long the SPI wires can be if this bus is
    isolated by an ADUM1401 ?

     

    A 

    It is a very simple bus, and the answer depends on the data rate. 
    They need to guarantee…

  • ADuM1401: Low supply voltage

    Q 

    I am using ADuM1401 in a battery powered system with two AA batteries.

    I was very surprised when the battery voltage dropped below 2.7V (exactly
    2.62V) and ADuM1401 begun to generate

    sporadically 800ns long pulses at the output VOD (pin no. 6…

  • ADUM1401: I/P maximum voltage

    Q 

    I want to use the optoisolator ADUM1401ARW in my design. It will be used for
    the isolation of the TXD data line of the RS232 port. Could I connect the TXD
    data line of the PC's RS232 directly to the isolators inputs?
    In many application I saw…

  • Сurrent consumption ADUM141E and ADUM1401

    Hi,

    The client is using ADUM1401, but he wants to change to a newer ADUM141E. But he says that AdUM141E has a higher current consumption than ADUM1401, and a lot of heat dissipation. 
    Data rate 2 MHz, continuous data transfer mode. Source of 8 channels…

  • ADUM1401: Is it possible to disable the refresh pulses on the iCoupler?

    Q 

    Is it possible to disable the refresh pulses on the iCoupler?

     

    A 

    No, the refresh pulses are internal to the iCoupler devices. In the absence of
    logic transitions at the input for more than ~1 μs, a periodic set of refresh
    pulses indicative of…

  • ADUM1401: Can I increase max data rate to 2Mbps and will this compromise pulse width distortion spec ?

    Q 

    The data sheet for ADuM1401 specifies that the maximum data rate for
    ADuM1401ARWZ is 1Mbps to guarantee a maximum pulse width distortion of 40ns.
    Could ADuM1401ARWZ support 2Mbps data rate if the 40ns pulse width distortion
    spec can be compromised…

  • ADUM1401使用中损坏

    我有三块板使用了 ADuM1401CRW。一边是3.3V，另一边5V，在使用过程中不知道什么原因损坏了两片，输出脚高电平（输入脚有波形）。

    请问这个是什么原因可能会引起芯片损坏？电路图如下:

    图中AI-5V,在不始用的时候电源是被关闭的。

  • ADUM1401 spi最高速率？

    ADUM1401C支持最高90mbps，理论支持spi是45mhz。手册上表明ADUM1401C传输延迟是32ns。半时钟周期必须大于传输延迟的2倍。通过计算支持spi速率是是7.8mhz。也不是45mhz。

    请问是这样吗？

     

  • RE: ADuM1401 input

    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
    …