CHARGE SAMPLING FILTER CIRCUIT AND CHARGE SAMPLING METHOD

摘要

[PROBLEMS] To provide a charge sampling filter circuit and a charge sampling method. [MEANS FOR SOLVING PROBLEMS] A charge sampling filter circuit has a first capacitor for sampling an inputted signal and outputs at least a part of charges stored in the first capacitor by sampling to a second capacitor which can be electrically continuous with the first capacitor. The charge sampling filter circuit is also provided with a switching section for switching circuit mode, including sampling mode for sampling the inputted signal by the first capacitor and output mode for carrying electricity between the first capacitor and the second capacitor. A capacitance value of the first capacitor in the output mode is lower than that in the sampling mode.