8.4 Consider the current-mirror circuit of Fig. 8.2 with two transistors having equal channel lengths but with Q2 having a width five times that of Q1. If IREF is 20 μA and the transistors are operating at an overdrive voltage of 0.2 V, what I O results? What is the minimum allowable value of VO for proper operation of the current source? If Vt = 0.5 V, at what value of V O will the nominal value of IO be obtained? If V O increases by 1 V, what is the corresponding increase in IO ? Let V A = 20 V

8.4 - 8.4 Consider the current-mirror circuit of Fig. 8.2 with two transistors having equal channel lengths but with Q2 having a width five times that of Q1. If IREF is 20 μA and the transistors are operating at an overdrive voltage of 0.2 V, what I O results? What is the minimum allowable value of VO for proper operation of the current source? If Vt = 0.5 V, at what value of V O will the nominal value of IO be obtained? If V O increases by 1 V, what is the corresponding increase in IO ? Let V A = 20 V

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images - 8.4 Consider the current-mirror circuit of Fig. 8.2 with two transistors having equal channel lengths but with Q2 having a width five times that of Q1. If IREF is 20 μA and the transistors are operating at an overdrive voltage of 0.2 V, what I O results? What is the minimum allowable value of VO for proper operation of the current source? If Vt = 0.5 V, at what value of V O will the nominal value of IO be obtained? If V O increases by 1 V, what is the corresponding increase in IO ? Let V A = 20 V

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