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Unformatted text preview: o v * 2 M1 M1' M2 M2' C L VDD I SS V o V in VSS 1 2. [20 points] The offset voltage V os of an amplifier is defined as the input required to satisfy V o =0. Calculate the variance of the offset voltage of the differential amplifier below as a function of TH V σ , R R / ∆ , I SS , and V*. Use the squarelaw approximation (i.e. V ) and assume infinite transistor output resistance. * V sat d = M1 M2 R 1 R 2 V o V in V DD I SS 2 3. [20 points] In the circuits below I D and I C are adjusted such the MDS (minimum detectable signal) due to thermal noise in the MOS and the BJT amplifiers are the same at low frequency. Calculate the ratio I D /I C for this condition. Your result should include only R s , V*, γ , T, and physical constants. Assume β Æ infinite. R s i s R s i s I D I C 3...
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 Spring '04
 Boser
 Computer Science, Electrical Engineering, Amplifier, Integrated Circuit, Transistor, VDD M2 M2

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