Patent ID: 6344776
Filing Date: 2002-02-05
Classification: H03F

Abstract:
A current mirror circuit comprising:an input port adapted to receive an input current; at least one output port adapted to provide at least one output current therefrom: a first polarity input transistor having an input electrode coupled to said input port, a control electrode coupled to receive a reference voltage, and an output electrode coupled to a second polarity transistor-based current mirror output circuit, which is operative to supply said at least one output current to said at least one output port in accordance with said input current; and a complementary polarity base current error compensation circuit coupled to said first polarity input transistor and to said second polarity transistor-based current mirror output circuit, and being operative to control said second polarity transistor-based current mirror output circuit in a manner that compensates for base current errors of said first polarity and input transistor second polarity transistors of said current mirror output at least one circuit.