Patent ID: 7948540

Claim:
A photoelectric conversion device including a pixel array in which a plurality of pixels are arrayed to form rows and columns, wherein pixels in a selected row respectively output signals to vertical signal lines, and amplifiers configured to amplify the signals supplied via the vertical signal lines, the device comprising: isolation switches inserted between the vertical signal lines and input nodes of the amplifiers; and a horizontal readout circuit configured to sequentially read out signals amplified by the amplifiers, wherein each pixel includes a photodiode, a floating diffusion, a transfer switch, which transfers a charge of the photodiode to the floating diffusion, and an amplification transistor, which outputs a signal to the vertical signal line in accordance with a potential of the floating diffusion, wherein each amplifier includes a differential amplifier, a clamp capacitor arranged between the isolation switch and an input terminal of the differential amplifier, and a reset switch interposed between the input terminal and an output terminal of the differential amplifier, and wherein the isolation switches are kept in a turned-off state at least in a period when a transfer pulse for controlling the transfer switches transits and the reset switch is turned off before the transition of the transfer pulse.