Consider the current source in Figure 10.2(b). The circuit is biased at \(V^{+}=2.5 \mathrm{~V}\) and \(V^{-}=-2.5 \mathrm{~V}\). The transistor parameters are \(\beta \cong \infty\), \(V_{A}=\infty\), and \(I_{S 2}=10^{-15} \mathrm{~A}\). The circuit is to be designed such that \(I_{O}=0.25 \mathrm{~mA}\) and the power dissipated in the circuit is no greater than \(1.8 \mathrm{~mW}\).

(a) Determine the maximum value of \(I_{\mathrm{REF}}\),

(b) the required value of \(I_{S 1}\), and

(c) the required value of \(R_{1}\).

Figure 10.2(b):-

Transcribed Image Text:

IREF V+ ww R + VBE v (b) Q2 Ic2=10 OVC2