• ADuM1200 I/O question

    What kind of inputs and outputs does the ADuM1200 have?

  • ADUM1200 AND ADUM1201 supply voltage

    hi：

        i want to know the suplly voltage of adum1200 and adum1201,if they can work on 5V and 1.8V.

  • ADuM1200/1201 glitch on power up/down

    We've been using the ADuM1200AR and 1201AR for a while now.  They often produce a small glitch when the output side is already powered up and the input side power is ramping up or down.

    I noticed the ADuM1280/1281 should be drop in replacements but…

  • ADuM1200: Supply current

    Q 

    how looks the supply current during a ricing edge of the input signal?? is
    there any spike to expect??

     

    A 

    The ADuM1200 only draws significant current from the supplies at each logic
    transition. This is why the Idd1, Idd2 vs frequency curves…

  • ADuM1200 / 1201 hysteresis specification

    Hi folks,

    The ADuM1200/1201 / ADuM1400/1401/1402 functional block diagrams in the datasheet indicate Schmitt-trigger buffered inputs, however this is not reflected in the electrical characteristics specification section. I would like to use passive shoot…

  • RE: ADUM5240 IBIS models

    HOD: I asked the designer to look at your issue with using the ADuM5200 IBIS for the ADuM5420 and here is the response:

    I go through the ibis model files. Most probably, this issue is caused by wrong port mapping, ADuM1200 is more similar with ADuM5240…

  • ADuM1200: What is the input impedance of a single channel?

    Q 

    What is the input impedance of a single channel of the ADUM1200?

     

    A 

    The input impedance is not specified. Only input current is specified (worst
    case +/-10uA)

  • RE: 签个到，送您好礼啦！（获奖名单已公布）

    北京，海淀长春桥路，车载，关注ADUM1200和电源芯片

  • ADUM1200/ADUM3401: Compliance with 3rd Ed IEC 61010-1 certification (2014)

    Q 

    The  standard IEC61010-1 is changing in Jan 2014, one of the requirments is
    that the test voltage is changing from  2.5KVac to 3KVac. The Test voltage for
    the device ADuM1200, ADuM3401 is OK today to Edition 2 IEC61010-1,  but moving
    forward…

  • SPI总线用ADuM1200隔离，异常求教

    SPI总线中，用ADuM1400和ADuM1200做总线隔离，GPIO口模拟SPI总线，ADuM1400和ADuM1200速度等级都是最高的（样机用，选的好一些），使用中发现LMPMISO 5V信号经ADuM1200转换为3.3V MISO后，信号异常，信号波形如下图

    电路如下图

    电路中，LMPMISO上拉电阻已经修改为5.1K，5V端信号正常，DRDYB信号正常。

    求教，问题出在哪里？同一批次的几片板子都有这个现象。