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A simple MOSFET current mirror is shown in figure Q.6. The supply voltages are ±5 V. The two transistors are identical and have kn = 1 mA/V2, Vtn = 0.5 V and λ = 0.04 V−1. The reference current is 200 µA. The load resistor is 8 kΩ. (a) Determine the value of the reference resistor, Rref. (b) Calculate the output current Iout and voltage Vout using the MOSFET current-voltage relation in saturation, including the channel length modulation effect. (c) Calculate the output current Iout and voltage Vout using the MOSFET’s large-signal equivalent circuit (i.e. IDS0, Vov & ro ).

A simple MOSFET current mirror is shown in figure Q.6. The supply voltages are ±5 V. The two transistors are identical and have kn = 1 mA/V2, Vtn = 0.5 V and λ = 0.04 V−1. The reference current is 200 µA. The load resistor is 8 kΩ. (a) Determine the value of the reference resistor, Rref. (b) Calculate the output current Iout and voltage Vout using the MOSFET current-voltage relation in saturation, including the channel length modulation effect. (c) Calculate the output current Iout and voltage Vout using the MOSFET’s large-signal equivalent circuit (i.e. IDS0, Vov & ro ).

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A simple MOSFET current mirror is shown in figure Q.6. The supply voltages are ±5 V. The two transistors are identical and have kn = 1 mA/V2, Vtn = 0.5 V and λ = 0.04 V−1. The reference current is 200 µA. The load resistor is 8 kΩ. (a) Determine the value of the reference resistor, Rref. (b) Calculate the output current Iout and voltage Vout using the MOSFET current-voltage relation in saturation, including the channel length modulation effect. (c) Calculate the output current Iout and voltage Vout using the MOSFET’s large-signal equivalent circuit (i.e. IDS0, Vov & ro ).

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