Circuit Design 4· Please answer the following True and False questions with the

Question

Circuit Design

4· Please answer the following True and False questions with the reasoning behind your answer. a. The resistor in an RC filter determines the total integrated rms noise at the b. The output impedance of a BJT cascode amplifier is generally much higher c. An NMOS differential pair has a wider linear input range than a NPN output? (True or False) Why? than a MOS cascode. (True or False) Why? differential pair if we assume that NMOS transistors are biased in strong inversion (True or False) Why? d. The unity gain frequency of a CE stage is better than the unity gain frequency of a CS stage for the same current consumption. (True or False) Why? For the same area and current consumption a CE stage has more noise at the output than a CS stage (neglect /f noise). (True or False) Why? e.

Explanation / Answer

a. TRUE

The resistor R adds all the rms noise voltage at the input to the RC filter. Therefore, the resistor determines the total integrated rms noise at the output.

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