Patent ID: 7248100

Claim:
A semiconductor device comprising: a plurality of current mirror circuits having reference input terminals and output terminals respectively, each of the reference input terminals being provided with a current having a different current value; a current output terminal connected to each of the output terminals of the current mirror circuits; a control circuit to output a control signal to control output currents of the current mirror circuits; wherein each of the current mirror circuits includes: a first insulated gate type transistor having a first gate terminal, a first drain terminal connected to one of the reference input terminals and a first source terminal connected to a power supply; a plurality of second insulated gate type transistors, each having a second gate terminal, a second drain terminal connected to one of the output terminals and a second source terminal connected to the power supply; and a plurality of switching elements, each being provided between one of the reference input terminals and one of the second gate terminals of the second insulated gate type transistors, and each being controlled by the control signal to set to one of ON and OFF states.