Question

plz solve these two question.

9.5. Suppose the circuit of Fig. 9.41 is real- shown in Fig. 9.42, where Q3 plays the role of /1. Assuming VAi VA2 VA,n and VA3 VA. p, determine the output impedance of the circuit. Rout Rout Vcc Vcc Vb1 a1 Vb3 V1 a Q2 Q Figure 9,42 Figure 9.41 HO 9.49. The current mirror shown in Fig. 9.74 must deliver 1 0.5 mA to a circuit with a total power budget of 2 mW. Assuming VA 00 and B» 1, determine the required value of IREF and the relative sizes of QREF and Q1 Vcc 2.5 V Circuit REF 11 QREF Fiqure 9.74

Answer 1

9.5 Rout 3 TRS R 2 R2 ond V I AC ae AC Rout Rost I, o.5 mA 9.49 2m pouoex Yec (TREF Porcex 2m ,snA = O.3nA 25Y Pouoe Ncc IREF Theselode, 9EF as Avea Ae , thon , has the cuents specified asea AREE A