The present invention provides a current mirror circuit of which
consistency (ratio) of the input current and output current is more
improved. This current mirror circuit comprises input side and output
side bi-polar transistors of which bases are commonly connected, an input
side MOS transistor of which source is connected to a collector of the
input side bi-polar transistor and of which drain and gate are connected
to the input terminal, output side MOS transistors of which source is
connected to the collectors of the output side bi-polar transistors, of
which drain is connected to the output terminals, and of which gate is
connected to the gate of the input side MOS transistor, and an MOS
transistor for supplying base current of which source is connected to the
bases of the input side and output side bi-polar transistors, and of
which gate is connected to the gate of the input side MOS transistor.