| 摘要 |
A current output circuit capable of reducing a variation in output channel currents, making small an occupied area in an integrated semiconductor chip, and shortening a time required for setting an output current. The current output circuit has a single reference current source, a plurality of current supply circuits each being constituted of a current mirror circuit made of a pair of MOS transistors and a hold capacitor, an operational amplifier, and a plurality of switching devices for selecting the current supply circuits in accordance with a load. The operational amplifier controls through feedback so that a current sampled by the current supply circuit becomes equal to the predetermined reference current to supply a drive current corresponding to the sampled current to each load.
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