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9.65 A bipolar differential amplifier with I = 0.2 mA utilizes transistors for which VA = 20 V and β = 100. The collector resistances RC = 10 kΩ and are matched to within 10%. Find: (a) the differential gain (b) the common-mode gain and the CMRR if the bias current I is generated using a simple current mirror (c) the common-mode gain and the CMRR if the bias current I is generated using a Wilson mirror. (Refer to Eq. 8.98 for Ro of the Wilson mirror. ) Ro ≃ 12 β ro3

9.65 A bipolar differential amplifier with I = 0.2 mA utilizes transistors for which VA = 20 V and β = 100. The collector resistances RC = 10 kΩ and are matched to within 10%. Find: (a) the differential gain (b) the common-mode gain and the CMRR if the bias current I is generated using a simple current mirror (c) the common-mode gain and the CMRR if the bias current I is generated using a Wilson mirror. (Refer to Eq. 8.98 for Ro of the Wilson mirror. ) Ro ≃ 12 β ro3

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9.65 A bipolar differential amplifier with I = 0.2 m A utilizes transistors for which V A = 20 V and β = 100 . The collector resistances R C = 10 k Ω and are matched to within 10 % . Find: (a) the differential gain (b) the common-mode gain and the CMRR if the bias current I is generated using a simple current mirror (c) the common-mode gain and the CMRR if the bias current I is generated using a Wilson mirror. (Refer to Eq. 8.98 for R o of the Wilson mirror.)
R o ≃ 1 2 β 3 r o 3

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