Emitter-follower type single-ended push-pull circuit

摘要

An emitter-follower type single-ended push-pull circuit for which no temperature compensation is required and for which it is unnecessary to adjust the idle current. First and second complementary current mirror circuits are coupled as loads of respective first and second complementary differential amplifiers. Each of the differential amplifiers includes a first transistor to which an input signal voltage is applied, a second transistor to which a voltage at the output terminal of the circuit is applied as an input signal with the second transistor being connected in parallel with the first transistor, and a third transistor to which a voltage corresponding to an emitter or source voltage of a respective one of the output transistors is applied as an input voltage. The collector or drain output of the third transistor is employed as a drive output to a respective drive transistor in the output stage.