In the differential stage above, IBIAS = 1 μA, RC = 50 kΩ and Rsig = 5

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In the differential stage above, IBIAS = 1 μA, RC = 50 kΩ and Rsig = 50 kΩ. Cμ = 0.2 pF, Cπ = 0.33 pF, and β = 200 for all the transistors. You can neglect ro and rx. a) Calculate gm for the transistors in mA/V. b) Calculate the differential gain Ad = V0 Vsig of the stage in V/V. c) Use the open-circuit time constant method to estimate the frequency in MHz at which the differential gain drops by 3 dB relative to its DC value.

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In the differential stage above,

I_{B I A S} = 1 μ A, R_{C} = 50 k Ω

and

R_{sig} = 50 k Ω . C_{μ} = 0.2 p F, C_{π} =

0.33 p F

, and

β = 200

for all the transistors. You can neglect

r_{o}

and

r_{x}

. a) Calculate

g_{m}

for the transistors in

m A / V

. b) Calculate the differential gain

A_{d} = \frac{V_{0}}{V_{s i g}}

of the stage in V/V. c) Use the open-circuit time constant method to estimate the frequency in MHz at which the differential gain drops by 3dB relative to its DC value.