Consider the circuit shown in Figure P10.14. The transistor (Q_{2}) is equivalent to two identical transistors in

Question:

Consider the circuit shown in Figure P10.14. The transistor $Q_{2}$ is equivalent to two identical transistors in parallel, each of which is matched to $Q_{1}$. Assume the transistor parameters are $V_{B E}(\mathrm{on})=0.7 \mathrm{~V}, \beta=60$, and $V_{A}=\infty$, and assume the bias voltage is $V^{+}=2.5 \mathrm{~V}$. Design the circuit such that $I_{O}=0.50 \mathrm{~mA}$ and determine the value of $I_{\mathrm{REF}}$.

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