• Difference between ADuM2401 v ADuM4401

    I would like to know what the difference between the ADUM2401 and the ADUM4401
    isolators. Both devices are 5 kV RMS Quad-Channel Digital Isolators?

     

    Yes, both ADuM2401 and ADuM4401 are 5 kV RMS Quad-Channel Digital Isolators.
    The…
  • Can you provide any Radiated Emission test result for iCoupler?

    Hi,

    I would like to ask if any test result report for Radiated Emission is available for ADI iCoupler, especially for ADuM2401 and ADuM4401?

  • ADUM4401输出信号浪涌测试中异常

    你好,

      
     
    我们有使用ADUM4401 作为一、二次侧信号隔离与数据传送隔离. 但做surge 测试时却发现有时isolator input low, output 却变成为high(如下图Ch4), 想请问:

      1. 可能的原因是什么?
      2. 要如何改善此问题?

    C1: VCC1, C3: Isolator pin4(INB), C4: Isolator pin13(OUTB)




     
     
     
     
     
     
     
     
     
     
     
     

  • RE: ADuM4401 IOH & IOL & output source /sink  question

    Hi Webber:

    ADuM4401 output is push-pull structure.

    Isouce and Isink should be 4mA limit to guarantee output logic. this data is specified in test condition of Voh and Vol.

  • RE: ADUM4401 output signal abnormal during surge test

    Hi Sam,

    The ADuM4401 has a watch-dog timer on the receiver side which puts the device into a default High state if there are no signal pulses across the transformer. See this excerpt from the data sheet:

    I suspect that the surge test is interfering…

  • RE: ADuM2401 Vdd1 pull down the supply power during surge test.

    Hi Brent,

    From the additional information you provided it might be attributed to latchup. I was curious if you have used the ADuM4401 before. This part is mentioned in the app note AN-793 linked below.
    http://www.analog.com/media/en/technical-documentation…

  • RE: Capacitor coupling in high common mode noise enviroment

    Hello Jester,

    We recommend referencing the input circuitry to the isolated Analog ground. See this post for more information:

    http://ez.analog.com/message/60282#60282

    You might also consider a 4-channel digital isolator for the SPI interface as an…

  • TAGS LIST: Interface and Isolation

    LTM2894
    LTM2895
    LTM9100
    LTM2885
    LTM2881
    LTM2882
    LTM2883
    LTM2884
    LTM2893
    LTM2886
    LTM2887
    LTM2889
    LTM2892
    LTC1694-1
    LTC4300
    LTC4310
    LTC4302
    LTC4305
    LTC4304
    LTC4303
    LTC4306
    LTC4307
    LTC4307-1
    LTC430…