AnsweredAssumed Answered

adum1402 leakage

Question asked by dave250 on Mar 14, 2018
Latest reply on Mar 15, 2018 by fox

Hi,

 

When powering only VDD1(2) a voltage appears on the un-powered VDD.

The leakage current is about 35uA.

 

 

The voltages on each of the ADUM1402 pins are as follows -

 

1, 7 - +5V1 supply

2, 8 - GND1

3 - 10k to GND1

4 - driven High by uC.

5 - uC input pin with pull-up.

6 - Not connected

 

9, 15 - GND2

10 - +5V2 supply (turned off)

11 - 10k to GND2

12 - connected to unpowered uC.

13 - connected to unpowered uC.

14 - not connected.

16 - +5V2 supply (turned off), when this pin is not lifted, it measures 0.15V. When lifted off PWB, the voltage is 0.65V and it sinks 35uA into 4.72K.

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