Design of differential amplifier using emitter follower as inductive load

摘要

The present invention relates to a differential amplifier circuit, and more particularly to a differential amplifier circuit having an inductive active load.;The present invention relates to an emitter-coupled differential amplifier circuit having a capacitive output load, comprising: an emitter-coupled differential amplifier unit in which a signal applied to an input terminal is applied to the bases of first and second transistors; And a second inductive active load connected to the collector of the second transistor through a second load resistor.;Therefore, the present invention can cancel the capacitance component of the conventional amplifier with the inductive component of the emitter follower, thereby expanding the frequency band, and generating the peak at the desired frequency as shown in FIG. 10,