For the folded-cascode amplifier shown in Fig. 6.20, assume the bias currents of and are times greater than the bias currents in and . Assume the total bias current in the opamp, , is determined by a...

For the folded-cascode amplifier shown in Fig. 6.20, assume the bias currents of and are times greater than the bias currents in and . Assume the total bias current in the opamp, , is determined by a specified power dissipation. Derive an equation for the unity-gain frequency in terms of and . Then show that the unity-gain frequency is maximized by taking large.