ADUM

  • Article

    ADuM for >2kV voltage

    Question 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…
  • Article

    ADuM1100 glitch filter window vs. very narrow pulses

    Question Problem description: I have found that narrow pulses of about 5ns cause the output to respond to only one edge and produce a pulse of many hundreds of nanoseconds until the low frequency…
  • Article

    ADuM1250 detect levels scale with the supply

    Question We are using ADuM1250 for I2C isolation in our product (for industrial automation). Side 1 is supplied by VDD1=3.3V and SCL1 and SDA1 are pulled up to the same VDD1=3.3V. Side 2 of the isolator…
  • Article

    ADuM1250 failure in hot-swapping application

    Question My customer have a failure issue with ADuM1250ARZ - Hot Swappable, Dual I2C Isolators Please see follow his description: Until now we already assembled about 100 components, on 3 of them…
  • Article

    ADuM1250 Side1 minimum levels

    Question I want to know if it is possible to connect a I2C device to the Side 1 of your ADuM1250 chip. The I2C device has SDA,SCL Input Logic-High (Vih) of 1.4 V minimum, SDA,SCL Input Logic-Low (Vil…
  • Article

    ADuM1250: tips to reduce power consumtion in a battery application.

    Question I want to use the ADUM1250/51 in a battery application. Are there some tips to decrease the power in this type of application? Answer The ADuM1250 consumes a certain amount of power when idle…
  • Article

    ADuM1251 max permitted voltage for IEC 61010 reinforced

    Question I am getting a little confused. What is the maximum permited voltage under IEC 61010 for reinforced insulation using this part? Answer The ADuM2251 is the 5 kV version of that part (ADuM125x…
  • Article

    ADuM1251: Flash testing limits

    Question I am using ADuM1251 to cross the safety boundary mains input to touchable output in a switch mode power supply. As part of testing the following test voltages are applied: 1.5Kv AC 2Kv Dc…
  • Article

    ADuM1251: Vol issues with non standard I2C applications

    Question I have a customer using ADuM1251 for their I2C isolation application. But currently, they meet the below picture status （Figure 1）: Figure 1 This is tested from our ADuM1251 primary…
  • Article

    ADuM1301 Output current capability

    Question I am using ADUM1301; could you please provide me the output current capability (sourcing the current) for the pins 13(VOB) and 14(VOA). Answer Page 4 of the ADuM1301 datasheet states that the…

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