High-frequency clipping stage

摘要

A differential input stage comprising two transistors (Q1,Q2) supplied by a current source (Q4,R4) is connected between two power supply lines. A third transistor (Q3) connected between the lines and to the input stage is supplied by a second current source (Q5,R5). An output stage is connected to an output load parallel to an active load (Q8) which is driven (C) so as to initiate a current pulse from the third transistor providing a faster falling front of the output signal.