Cálculo do Ganho do Amplificador Cascode

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Step of 6 8.021E Determine the transconductance of the CS and CG amplifiers. 2 0.1mA mA = 0.2 V V 2 =1mA/V Step of 6 Determine the output = V mA The output resistances of the CS and CD amplifiers are, Step of 6 (a) The load resistance is, Refer to Table 7.1 in the text book. The gain of the amplifier for = ro is, Thus, the gain of the amplifier is -2 V/V Write expression for the gain for = Substitute 1 mA/V for and 20 kΩ for ro = V/V Thus, the gain is 10 V/V Step of 6 Determine the overall gain =(-2)(10) -20 V/V Therefore, the overall gain A of the cascode amplifier is -20 V/V V/V Step of 6 (b) Determine the value of = 400 The load resistance is, Refer to Table 7.1 in the text book. Write the expression for the gain of the amplifier for Substitute 1 mA/V for and 20 for ro = V/V Thus, the gain of the amplifier is -10 V/V Write expression for the gain for = Substitute 1 mA/V for 8m and 20 kΩ for ro = 20 V/V Thus, the gain is 20 V/V 20 V/V Step of 6 Determine the overall gain =(-10)(20) =-200 V/V Therefore, the overall gain A of the cascode amplifier is -200 V/V