Can anyone shed some light on this short section from my book?
Here is common-mode behavior of differential amplifier:
What happens if VinCM = 0? Since the gate potential of M,and M2 is not more
positive than their source potential,both devices are off,yielding ID3=0.
This part is from the book. I want to ask a stupid question. How can you know that the gate potential of M1 and M2 is not more positive than than their source potential?
Is the smallest potential in this circuit possible only zero? There is no negative potential at any nodes in the circuit.
Here is common-mode behavior of differential amplifier:
What happens if VinCM = 0? Since the gate potential of M,and M2 is not more
positive than their source potential,both devices are off,yielding ID3=0.
This part is from the book. I want to ask a stupid question. How can you know that the gate potential of M1 and M2 is not more positive than than their source potential?
Is the smallest potential in this circuit possible only zero? There is no negative potential at any nodes in the circuit.
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