Capacitive Coupling in a Semiconductor

[AD25]

Hello,

I have a dual, N-channel MOSFET die in one package, and I need help in trying to figure out how to measure the capacitive coupling of these two die. The configuration is not one dual monolithic die, but rather two different N-channel MOSFET die in a single package.

Someone mentioned applying a step voltage across one MOSFET, and see how the current changes in the other, based on: i = C (dv/dt)

Now, where would the step voltage applied to: the gate of one MOSFET?
And then measure the drain current of the second MOSFET?

Thanks,
AD25

 

[IRstuff]

What exactly is the concern? The coupling is most likely lower than any other coupling in your circuit. You'd need a capacitance meter that can measure femtofarads or attofarads and an EXTREMELY robust measurement setup.

What you've proposed will most likely fry your device before you get a good measurement from it. Also, had you looked at the datasheet for the part?



TTFN