ANALOGUE CURRENT SWITCH IN BIPOLAR TECHNOLOGY

摘要

An analogue current switch in bipolar technology in which an intermediate transistor (Ti), which isolates the current injector (S) from the switching diode (Dc), is biassed by means of a transistor (T) whose collector, which is coupled to its base, is connected to the base of (Ti) and to the anode of a diode (D), the emitters of (T) and (Ti) as well as the cathodes of (D) and (Dc) being interconnected. An application for this analogue current switch is in digitalto-analogue signal processing.