AMPLIFIER CIRCUIT, INTEGRATION CIRCUIT, AND PHOTODETECTOR

摘要

PROBLEM TO BE SOLVED: To provide an integration circuit, a photodetector and an amplifier circuit that can operate more stably. SOLUTION: The photodetector 10 is provided with a photodiode PD; an amplifier A; a first switch SW1; a second switch SW2; and a capacitive element C. The amplifier A and the first switch SW1configure the amplifier circuit 101. The amplifier circuit 101, the capacitive element C, and the second switch SW2configure the integrated circuit 102. The amplifier A includes an inverting input terminal P1, a non-inverting input terminal P2, an output terminal P0, and a drive section comprising series connection of first and second transistors T1, T2. The first switch SW1is provided between the output terminal P0of the amplifier A and a ground level. The capacitive element C and the second switch SW2 are provided between the inverting input terminal P1of the amplifier A and the output terminal P0. COPYRIGHT: (C)2005,JPO&NCIPI