Response to the following problem:
A designer considers a number of low-voltage BJT amplifier designs utilizing power supplies with voltage VCC of 1.0, 1.5, 2.0, or 3.0 V.
For transistors that saturate at VCE = 0.3 V, what is the largest possible voltage gain achievable with each of these supply voltages?
If in each case biasing is adjusted so that VCE = VCC/2, what gains are achieved? If a negative-going output signal swing of 0.4 V is required, at what VCE should the transistor be biased to obtain maximum gain?
What is the gain achieved with each of the supply voltages? (Notice that all of these gains are independent of the value of IC chosen!)