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7.15 An NMOS differential pair is biased by a current source I = 0.2 mA having an output resistance RSS = 100 kΩ. The amplifier has drain resistances RD = 10 kΩ, using transistors with kn'W/L = 3 mA/V2, and ro that is large. (a) If the output is taken single-endedly, find |Ad|, |Acm|, and CMRR. (b) If the output is taken differentially and there is a 1% mismatch between the drain resistances, find |Ad|, |Acm|, and CMRR.

7.15 An NMOS differential pair is biased by a current source I = 0.2 mA having an output resistance RSS = 100 kΩ. The amplifier has drain resistances RD = 10 kΩ, using transistors with kn'W/L = 3 mA/V2, and ro that is large. (a) If the output is taken single-endedly, find |Ad|, |Acm|, and CMRR. (b) If the output is taken differentially and there is a 1% mismatch between the drain resistances, find |Ad|, |Acm|, and CMRR.

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7.15 An NMOS differential pair is biased by a current source I = 0.2 mA having an output resistance RSS = 100 kΩ. The amplifier has drain resistances RD = 10 kΩ, using transistors with kn'W/L = 3 mA/V2, and ro that is large. (a) If the output is taken single-endedly, find |Ad|, |Acm|, and CMRR. (b) If the output is taken differentially and there is a 1% mismatch between the drain resistances, find |Ad|, |Acm|, and CMRR.

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