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**Unformatted text preview: **collector current I o and driven from a source with output resistance R s . Calculate the value of R s for which the input referred noise from the MOS and BJT amplifier are equal. When is the BJT advantageous? Another memorable result! Parameters: I o =100 A, V*=200mV, =1, =100. Ignore flicker noise. 3. In the circuit below, the switch S1 is first closed and then opened abruptly, disconnecting C L from the amplifier. Calculate an exact expression for the variance of the noise voltage sampled onto C L after opening the switch. The result should be a function of R s , g m1 , R L , C L , and k B T. Neglect flicker noise, the output conductance of M1, and all capacitors except C L ....

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