Chegg Solutions for Microelectronic Circuits (Adel S Sedra, Kenneth C Smith) (Z-Library)_parte_110

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Step of 5 8.078P Refer to Figure 7.19 in the textbook for the BJT cascode amplifier. Write the expressions for Rop and And Step of 5 Since all the transistors have equal and the expression for Rop and is, = = = Substitute for for and for in the equation. = + = + = Simplify further. = 1 = Step of 5 The voltage gain is, Since all the transistors have equal and ro the expression for voltage gain is, Substitute for I for Rop and for in the equation. V = = 1 = 2 1 + Therefore, it is proved that the voltage gain can be expressed as, = 2 + V Step of 5 Consider the expression for voltage gain. V 1 2 1 + V Step of 5 Substitute for 25 mV for and 50 for in the equation. 5 1 0.025 2 5 0.025 + 50 = 200 100 = 200.02 Thus, the voltage gain is, -0.5 V/V V/V