| 摘要 |
An apparatus includes a first input transistor to include a base receiving a drive signal for an object to be driven, a first current source connected to an emitter side of the first input transistor and configured to control a modulation amplitude of a signal flowing to a collector of the first input transistor, a second current source connected to a collector side of the first input transistor and configured to control a biased current of a signal flowing to the collector, a first inductor configured to dispose between the collector and the second current source, and an output element connected between the second current source and the first inductor and configured to output, to the object, a current signal of which the modulation amplitude is controlled by the first current source and the biased current is controlled by the second current source.
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