Augment the design of the folded-cascode opamp in Example 6.9 to replace with the wide-swing cascode bias circuit of Fig. 6.12 where and . Next, replace the tail current source with a NMOS transistor...

Augment the design of the folded-cascode opamp in Example 6.9 to replace with the wide-swing cascode bias circuit of Fig. 6.12 where and . Next, replace the tail current source with a NMOS transistor biased by the same wide-swing bias circuit. Finally, introduce additional circuitry to generate the required bias voltage . Give the sizes of all transistors.