Hi,
Thanks for your reply.
I do mean GBWP, which is the unity gain frequency of the amplifier. But the GBWP can be defined so:
ωu = Av × ω3dB
in which Av is the amplifier gain and ω3dB is the -3dB frequency of the amplifier. If we rewrite the equation we have:
ωu = (gm×Rout) × 1/(Rout×Cout)
in which case, a dominant pole at the output node is assumed. So, If we simplify the equation we have:
ωu = gm /Cout
Therefore, by increasing the gm, the ωu should increase.
Isn't that right?