Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
By sketching and analysing the equivalent circuit of the amplifier.How do you know that another pole is at the source of Cascode transistor ?
No, no. The first and second stage clearly constitute separate poles (at least two, as stated) which can't be summed up to a single pole. An single pole has 90° asymptotic phase lag, a double pole 180°. But the second, non-dominant pole becomes effective in the higher or even above the used frequency range of the amplifier.All the device capacitances ( even caps at the source of cascode stage )contributes to a dominant pole.