Response to the following problem:
To provide insight into the possibility of nonlinear distortion resulting from large differential input signals applied to the differential amplifier of Fig., evaluate the normalized change in the current iE1, ?iE1/I = ? iE1 -(I/2) /I, for differential input signals vid of 2, 5, 8, 10, 20, 30, and 40 mV. Provide a tabulation of the ratio (?iE1/I ) /vid , which represents the proportional transconductance gain of the differential pair, versus vid . Comment on the linearity of the differential pair as an amplifier.
