WAVEFORM SHAPING FILTER, INTEGRATED CIRCUIT, AND RADIATION DETECTION DEVICE, AND TIME CONSTANT ADJUSTMENT METHOD AND GAIN ADJUSTMENT METHOD FOR WAVEFORM SHAPING FILTER

摘要

PROBLEM TO BE SOLVED: To provide a waveform shaping filter, an integrated circuit, and a radiation detection device, capable of adjusting a time constant and that have a small circuit scale, and to provide a time constant adjustment method and a gain adjustment method for the waveform shaping filter.SOLUTION: A waveform shaping filter according to an embodiment comprises at least one filter stage, and a controller. The filter stage comprises a differential signal generation part, a proportional signal generation part, and an addition part. The differential signal generation part generates a differential signal obtained by amplifying a differential component of an input signal. The proportional signal generation part generates a proportional signal obtained by amplifying the input signal. The addition part outputs an output signal obtained by adding the proportional signal and the differential signal. The controller compares the output signal and a first detection level with each other, detects at least one of overshoot and undershoot of the output signal, and controls a time constant of the filter stage on the basis of the detection result.SELECTED DRAWING: Figure 1