Chegg Solutions for Microelectronic Circuits (Adel S Sedra, Kenneth C Smith) (Z-Library)_parte_100

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Step of 4 8.068P Refer to Figure 7.10 in the textbook for the circuit. The output resistance of the cascade current source is, = = = = 2.5 MΩ Thus, the output resistance is, MΩ Calculate the voltage = V Calculate the voltage = 3.3 = 2.3 V Thus, the voltage is, Step of 4 To allow largest possible signal swing at the output terminal, use minimum required voltage across Calculate the voltage = 3.3 0.2 = 3.1 V Since the two transistors are identical and are carrying equal currents, the voltage is, = V Calculate the voltage =3.1-1 =2.1 V Thus, the voltage is, Step of 4 The maximum voltage allowed at the output terminal of the current source is strained by the need to allow a minimum voltage of across The highest allowable voltage at the output is, =3.1-0.2 =2.9 V Thus, the highest allowable voltage at the output is 2.9 V Step of 4 The bias current in the circuit is, Since, = ) Substitute 100 µA for I 60 for 0.2 V for and 5 V for in the equation. 100 0.2 5 =80.13 W W Thus, the ratio is, 80.13 L L