For the circuit shown in Fig. 6.16 with the W/L ratios shown and assuming all lengths are 0.3 μm, estimate the output impedance. Assume that all current sources are ideal and that . Compare this to...

For the circuit shown in Fig. 6.16 with the W/L ratios shown and assuming all lengths are 0.3 μm, estimate the output impedance. Assume that all current sources are ideal and that . Compare this to the output impedance of a wide-swing cascode current mirror where the gate of was simply connected to a dc bias voltage that keeps in active mode.