| 摘要 |
PROBLEM TO BE SOLVED: To obtain an output current of multiple output, that is accurately proportional to an input current by providing a 2nd current mirror circuit having a 2nd transistor TR, which is connected to every emitter of an output TR and connecting an input terminal to the base of a 1st TR via a base current correction circuit to draw a correction current from the input terminal. SOLUTION: A multiple output current mirror circuit includes a base current correction circuit 104, which supplies a correction current Ix into an input terminal 104A that is connected to the bases of a TR QB and a TR QD respectively. The output currents I1' to Im' flowing into the collectors of output TR, Q1 to Qm become such that I1'=I2'=,...,=Im'=Ip'/m-Ib. Then I1'=I2'=,...,Im'=Ia-m.Ib+Ib1+(Ib1+Ix)/m-Ib is satisfied. If Ix=(m2-1) Ib, the error that is caused by a base current between an input current Ia and the output current I1' to Im' becomes equal to 0.
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