A wide-swing cascode current mirror is shown in Fig. P6.23. Assuming all devices are identically sized , derive an expression for the resistance in terms of the current and device parameters in order...

A wide-swing cascode current mirror is shown in Fig. P6.23. Assuming all devices are identically sized , derive an expression for the resistance in terms of the current and device parameters in order to ensure that and are in active mode. How should be chosen to provide 50 mV of margin so that VDS, 1 Veff, 1 += 50 Mv.