In a CS amplifier, given that rds=0.5MΩ and gm=5mΩ^-1, the load is 10kΩ, source resistance is 44 kΩ. Calculate the internal amplification factor for the small signal model.(a) 2500(b) 8100(c) 9800(d) 7700I got this question in unit test.Question is taken from JFET Amplifier in portion FET Amplifiers of Analog Circuits

In a CS amplifier, given that rds=0.5MΩ and gm=5mΩ^-1, the load is 1

1.	In a CS amplifier, given that rds=0.5MΩ and gm=5mΩ^-1, the load is 10kΩ, source resistance is 44 kΩ. Calculate the internal amplification factor for the small signal model.(a) 2500(b) 8100(c) 9800(d) 7700I got this question in unit test.Question is taken from JFET Amplifier in portion FET Amplifiers of Analog Circuits
Answer» Right choice is (a) 2500 Easy EXPLANATION: When the current SOURCE in small SIGNAL MODE, gmVGS is converted into a voltage source, the source is equal to μVGS where μ=gmrds is the amplification factor of the circuit. Hence, amplification factor = 2500.

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