The Wilson-mirror expression Ro > (0y2)ro was derived under the assumption that the input current be supplied by an ideal current source. What if this current is supplied by a voltage source via a...

The Wilson-mirror expression Ro > (0y2)ro was derived under the assumption that the input current be supplied by an ideal current source. What if this current is supplied by a voltage source via a series resistance RB? (a) Use Blackman’s formula to fi nd an expression for Ro as a function of RB (as well as 0, ro, and). (b) Find RB to bias the Wilson mirror at 1 mA using a 5-V supply. Hence, calculate Ro if 0 5 200 and VA 5 75 V. What is the error incurred in using Ro > (0y2)ro?