Chegg Solutions for Microelectronic Circuits (Adel S Sedra, Kenneth C Smith) (Z-Library)_parte_010

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Step of 3 8.005P Refer to Figure P7.50 in the textbook for the circuit. Redraw the circuit by representing currents I₂ and as shown in Figure 1. Q₂ Figure 1 Step 2 of 3 The current reference is applied at the drain terminal of transistor Q1 From the circuit, the drain and gate terminals of are connected, which pushes the transistor into saturation region. The gate voltage of transistor is same as gate voltage of transistor Hence transistors and acts as current mirror network The current flowing in the drain terminal of transistor is I₂ The relation between and I₂ is, = (WIL), Here, (WIL), indicates transistor aspect ratio. Step 3 of 3 The current flowing in the transistor is From the circuit diagram, the drain voltage of transistor is equal to gate voltage of transistors and which in turn drives the transistor into saturation region. Since the current flowing into the gate of the MOSFET is zero, the current is, I₂ Hence transistors and acts as current mirror network Relation between and I₀ is, (WIL), = (WIL), Substitute I₂ for in the equation. = I₂ Substitute for I₂ in the equation. Thus, the output current of the circuit in terms of reference current is,