9.50 A bipolar differential amplifier with emitterdegeneration resistances Re and Re is fed with the arrangement shown in Fig. P9.50. Derive an expression for the overall differential voltage gain Gv ≡ vod/vsig. If Rsig is of such a value that v id = 0.5vsig, find the gain Gv in terms of RC, re , Re, and α. Now if β is doubled, by what factor does Gv increase?

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images - 9.50 A bipolar differential amplifier with emitterdegeneration resistances Re and Re is fed with the arrangement shown in Fig. P9.50. Derive an expression for the overall differential voltage gain Gv ≡ vod/vsig. If Rsig is of such a value that v id = 0.5vsig, find the gain Gv in terms of RC, re , Re, and α. Now if β is doubled, by what factor does Gv increase?

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