Extended Data Fig. 2: Additional characterization of the differential amplifier.
From: A microfluidic transistor for automatic control of liquids
a, Distortion (transfer) characteristics of the differential amplifier. The differential amplifier provides relatively linear amplification for amplitudes below 5 kPa. As in electronics, application of negative feedback can further linearize this output15. b, Common-mode rejection of the differential amplifier. The differential output is less sensitive to common-mode changes when biased around 190 kPa. c, Frequency response of the differential amplifier. Fourier analysis of the first 40 odd-harmonics of a square wave input show a low-frequency gain of approximately 27 dB.
