Chegg Solutions for Microelectronic Circuits (Adel S Sedra, Kenneth C Smith) (Z-Library)_parte_009

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Step of 5 8.005E Refer to Figure E7.19 in the text book. Modify the circuit diagram by marking currents as shown in Figure 1. REF I₂ I QREF Figure 1 Step of 5 The transistors pairs, act as current mirror networks whose collector currents are equal to Apply Kirchhoff's current law to the base node of the transistor, Step of 5 Apply Kirchhoff's current law to the collector node of the transistor = (1) Since the entire transistor pairs are matched, the currents are, Step of 5 For a maximum deviation of 10% from the unity, choose the value of as Calculate the value of for = 100 Substitute = A in equation (1). = 1 1+ (1+N) 0.9 = I 100 0.9 100 =1 0.9(1+N) 100 Simplify further. 0.9(1+N) 100 0.9(1+N) 0.1 100 Step 5 of 5 Simplify further. 9.1 N 0.9 The deviation is less than 10%. Choose an integer value such that, N