| 摘要 |
PURPOSE: An amplifier is provided to enable a user to freely set a desired level of amplification by adjusting a resistance value and to obtain excellent amplification characteristics. CONSTITUTION: A first resistor (R53) is connected to the emitter of a first transistor (Q51). A first constant current source (CC51) is connected to the collector of the first transistor. A second resistor (R54) is connected with the first constant current source in parallel. An amplification stage is composed of the first transistor, the first resistor, the first constant current source, and the second resistor. An amplifier includes at least one amplification stage. |
