• ADuM1441 Behaviour


    I'm using ADuM1441 in my design. Out of many boards manufactured only in one board when input logic is zero output logic goes to high only on some power On. Very often this happens in some power ON. What is the reason for this unknown behaviour. Can…

  • ADuM1441 Power sequence between input and Output side supply


    I'm using ADuM1441 in my design. From main power supply turning On time VDD2(output) power has delay of 500us. But VDD1(input) power takes around 2.6ms from main power supply turn on.

    So ADuM1441 gets it's output power first compared input power…

  • ADum1441 communication direction from CPU to ADC


    As per CN-0382 Circuit note AD7124 SPI communication input pins CS, SCLK & DIN are connected to Adum1441 logic input points VIA,VIB & VIC and  SPI communication output pins DOUT connected to Adum1441 logic output point VOD.

    But CN-0376  Circuit…

  • adum1441


    I am puzzled.

    Fig 1 of the datasheet suggest there are 2 bi-directional channels and two one-way channels.

    Table 23 shows 4 on-way channels; 3 from left to right, 1 from right to left.

    Which ones are bidirectional, which ones are uni directional?

  • ADuM1441 Digital Isolators without enable feature and low cost


    we have chosen AD7124-4 A/D chip for four channel Analog input (4 to 20mA) application and chosen ADuM1441ARQZ SPI Isolator for isolating MCU.

    ADuM1441ARQZ chip have 16pin with enable feature. But our application enable feature not require, So I can…

  • RE: Can an ADuM1441 really last 247 k hrs on a battery?

    This question has been closed by the EZ team and is assumed answered.
  • RE: ADUM1441 DC Offset difference between Input and Output signals

    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,
  • RE: ADUM1441 application notes

    You can also go to the "Reference Materials" section of the product page and click "Technical Articles." There you'll find the article linked above by Jason, as well as this one:


  • Digital isolator behaviour with miso signal


    I'm using ADuM1441 in my design.  I'm using SPI interface in my design which passes through ADuM1441 digital isolator. 

    It passes mosi clock and chip select properly from mcu to slave.  I have connected miso to vid of ADuM1441(slave side) and…