Calculate the output resistance of the Wilson current mirror shown in Fig. 4.57. What is the percentage change in I_OUTfor a 5-V change in VOUT? Compare your answer with a SPICE simulation using a full device model. Use SPICE to check the β_Fsensitivity by varying β_Fby −50 percent and examining I_OUT. Also, use SPICE to plot the large-signal I_OUT-V_OUTcharacteristic for V_OUTfrom 0 to15 V.

Figure 4.57:

Transcribed Image Text:

+15 V |'OUT 13.7 k2 Q2 VOUT 03