| 摘要 |
This preamplification circuit comprises a first circuit section, second circuit section the input signal of which is the output signal of the first circuit section, and third circuit section which is connected with the input section of the first circuit section and consumes a part of the current to be inputted to a connection point with the input section of the first circuit section and has the capacitance value of the third circuit section set at a value for suppressing a gain peaking of gain frequency characteristics which occurs in the preamplification circuit.
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