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Home/8.74 Figure P8.74 shows an amplifier known as a “double cascode.” It uses an additional CG transistor Q3 to increase the resistance by an additional factor (gm3ro3). Find an expression for the output resistance Ro and the voltage gain Avo ≡ vo/vi (assume the current-source load to be ideal). For identical transistors with gm = 2 mA/V and ro = 15 kΩ, find Ro and Avo.

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8.74 Figure P8.74 shows an amplifier known as a “double cascode.” It uses an additional CG transistor Q3 to increase the resistance by an additional factor (gm3ro3). Find an expression for the output resistance Ro and the voltage gain Avo ≡ vo/vi (assume the current-source load to be ideal). For identical transistors with gm = 2 mA/V and ro = 15 kΩ, find Ro and Avo.

8.74 Figure P8.74 shows an amplifier known as a “double cascode.” It uses an additional CG transistor Q3 to increase the resistance by an additional factor (gm3ro3). Find an expression for the output resistance Ro and the voltage gain Avo ≡ vo/vi (assume the current-source load to be ideal). For identical transistors with gm = 2 mA/V and ro = 15 kΩ, find Ro and Avo.

8.74 Figure P8.74 shows an amplifier known as a “double cascode.” It uses an additional CG transistor Q3 to increase the resistance by an additional factor (gm3ro3). Find an expression for the output resistance Ro and the voltage gain Avo ≡ vo/vi (assume the current-source load to be ideal). For identical transistors with gm = 2 mA/V and ro = 15 kΩ, find Ro and Avo.

8.74 Figure P8.74 shows an amplifier known as a “double cascode.” It uses an additional CG transistor Q3 to increase the resistance by an additional factor (gm3ro3). Find an expression for the output resistance Ro and the voltage gain Avo ≡ vo/vi (assume the current-source load to be ideal). For identical transistors with gm = 2 mA/V and ro = 15 kΩ, find Ro and Avo.