An internally compensated op amp has a dc open-loop gain of 106 V/V an...
-bandwidth product.
The gain-bandwidth product (GBP) can be calculated using the formula:
GBP = Aol x f
Where Aol is the open-loop gain and f is the frequency at which the gain is measured.
Given that the dc open-loop gain is 106 V/V, we can assume that the gain is constant up to a certain frequency. Therefore, we can estimate the GBP by using the AC open-loop gain of 40 dB at 10 kHz:
Aol = 10^(40/20) = 100
f = 10 kHz
GBP = Aol x f = 100 x 10,000 = 1,000,000 Hz
So the estimated gain-bandwidth product of the internally compensated op amp is 1,000,000 Hz.