A BJT cascode amplifier with a cascode active load is shown in Figure P10.89. Assume transistor parameters of \(\beta=120\) and \(V_{A}=80 \mathrm{~V}\). The \(V_{B B}\) voltage is such that all transistors are biased in the active region. Determine the small-signal voltage gain \(A_{v}=v_{o} / v_{i}\).

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24 V+=5V Q3 Qs VBias Q2 IREF= 250 Vi + + VBB Figure P10.89