MOS TYPE SOLID-STATE IMAGE PICKUP ELEMENT

摘要

PURPOSE:To reduce clock noises generated at the outside of a chip by providing an arithmetic means for receiving output components of an output terminal pin and of pins adjacent to said output terminal pin to add the output components between the two pins in opposite phase. CONSTITUTION:An output signal from a photodiode constituting the chip 1 is fed to a preamplifier 4 through an output terminal pin 31. An output of a pin 32 adjacent to the pin 31 is fed to other inputs of the amplifier 4 and the pin 32 is not connected to the chip 1. A signal waveform superimposing a clock noise component N on a signal component S extracted by a drive pulse DP appears at the pin 31. Further, a clock noise bypassed along the path of the package nearly equal to the pin 31 appears at the pin 32. In applying the signal waveform to the amplifier 4 having an arithmetic means, the signals are added in opposite phase and only the signal component excluded with the clock noises appears at the amplifier output.