Low voltage current source for producing current which varies inversely with supply voltage, comprises current mirror, heart circuits coupled together to form three branches and an output transistor

摘要

The supply voltage is applied between first and second terminals (Vcc,Vee) and the output transistor (T7) is connected to the first terminal and the base of a driver transistor (T6) which is part of a current mirror (Mi) including copying transistors (T4,T5). A heart circuit (C1) comprises two cross connected transistors (T1,T2) and a third transistor (T3). The heart and current mirror circuits are connected to form three branches between the terminals.