Question: You are given two amplifiers, A and B, to connect in cascade between a 10 mV, 10 k source, and a 1 k load.

You are given two amplifiers, A and B, to connect in cascade

between a 10 mV, 10 k source, and a 1 k load.

You are given two amplifiers, A and B, to connect in cascade between a 10 mV, 10 k source, and a 1 k load. Amplifier X has the following parameters: Input resistance, Ri = 2 MQ Output resistance, Ro = 130 k Short-circuit transconductance gain, Gms = 34 mA/V Amplifier Y has the following parameters: Input resistance, Ri = 50 k Output resistance, Ro = 126 2 Open-circuit trans resistance gain, Rmo = 34 kV/A Your problem is to decide how the amplifiers should be connected so that the overall power gain is the highest. For this, (a) Calculate the overall voltage gain, overall current gain, and overall power gain for the source XYload configuration. (b) Calculate the overall voltage gain, overall current gain, and overall power gain for the source YXload configuration. (c) Based on the expressions and values calculated in parts (a) and (b), comment on why you think one configuration gives a much higher overall power gain than the other. Express your answer in decimals and round it up to three digits after the decimal point.

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solution a Voltage Gain Voltage Gain GmY GmX GmY RmoY1 34 kVA1 0029 VA GmX GmsX1 34 mAV1 003 VA Ther... View full answer

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