The transistor parameters for the circuit in Figure P11.9 are: β = 120, VBE(on) = 0.7 V, and VA = ∞. (a) Determine RE such that IE = 0.25 mA. (b) Assume the RB resistance connected to the base of Q2 is zero while the RB resistance connected to the base of Q1 remains at 0.5 kΩ. (i) Determine the differential-mode voltage gain for a one-sided output at vO2- (ii) Determine the common-mode voltage gain for a one-sided output at vO2.
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