(a) If the BJT of Fig. P5.33 exhibits F 5 200 and VBE 5 0.64 V at IC 5 1 mA, specify suitable resistance values for VREF 5 1.0 V at VCC 5 5 V, under the constraints IC 5 0.25 mA and I R 1 5 10 I B....

(a) If the BJT of Fig. P5.33 exhibits F 5 200 and VBE 5 0.64 V at IC 5 1 mA, specify suitable resistance values for VREF 5 1.0 V at VCC 5 5 V, under the constraints IC 5 0.25 mA and I R 1 5 10 I B. (b) Use small-signal analysis to estimate the percentage change in VREF in response to a 20% increase in VCC. (c) Assuming VBE drifts by 22 mV/8C, estimate the drift of VREF.