Hi AD,
is the ADA4000-1 can be used as a comparator instead of amplifier and is it a dedicated op-amp to work for this kind of use (e.g comparator)
It seems that ADA4000 is highly sensitive working as a comparator and it doesn't like this non linear mode.
Moreover with a transistor on the output which could create high DV/DT for example.
thanks for your help,
Hi David,
I just read your answer, I will try to check on devices what happens taking into account your question.
I also have additional clues for this issue. ADA4000 datasheet precises that without voltage supplies (power voltages), input current on inverting and non inverting should be limited to 10mA.
During nominal mode, input current should be limited to acceptable values on inputs but during power on/off on inverting input, an overvoltage occurs which could lead to a current over 10mA.
I have attached input voltages seen by each inverting input on all ADA4000 used ( 4 different op-amp used with 4 different functions) when they are not power supplied (no power voltage).
Do you know if these input voltages could lead to damage of ADA4000 devices when there is no voltage supply and why ?
Hi David,
I just read your answer, I will try to check on devices what happens taking into account your question.
I also have additional clues for this issue. ADA4000 datasheet precises that without voltage supplies (power voltages), input current on inverting and non inverting should be limited to 10mA.
During nominal mode, input current should be limited to acceptable values on inputs but during power on/off on inverting input, an overvoltage occurs which could lead to a current over 10mA.
I have attached input voltages seen by each inverting input on all ADA4000 used ( 4 different op-amp used with 4 different functions) when they are not power supplied (no power voltage).
Do you know if these input voltages could lead to damage of ADA4000 devices when there is no voltage supply and why ?
