Image capturing device having efficient TDI operation and reduced circuit size

An imaging device, comprising:

• a pixel unit having M (M is an integer of 2 or more) pixel arrays arranged along a second direction perpendicular to a first direction, wherein each of the M pixel arrays includes N (N is an integer of 2 or more) pixel portions that perform photoelectric conversion and are arranged along the first direction;
• and
• M circuit units provided corresponding to the M pixel arrays,
• wherein each of the M circuit units includes:
• N charge amplifiers each of which includes an operational amplifier and a capacitive portion, which is connected between an inverting input terminal and an output terminal of the operational amplifier and in which a charge signal output from any one of the N pixel portions of the corresponding pixel array is accumulated, and which convert the charge signal into a voltage signal;
• and
• a switch circuit for switching connection states between the N pixel portions and the capacitive portions of the N charge amplifiers, and
• in each of the M circuit units, the switch circuit switches the connection state so that the capacitive portion in which the charge signal output from the pixel portion is accumulated is switched in accordance with an arrangement order of the N pixel portions along the first direction,
• wherein the M circuit units are arranged so as to be adjacent to the corresponding pixel arrays in the first direction,
• each of the M circuit units has N arrangement regions aligned in the second direction, and the charge amplifier is arranged in each of the N arrangement regions, and
• a width of each of the N arrangement regions in the second direction is equal to or less than 1/N of a width of the pixel portion in the second direction.

An imaging device, comprising:

• a pixel unit having M (M is an integer of 2 or more) pixel arrays arranged along a second direction perpendicular to a first direction, wherein each of the M pixel arrays includes N (Nis an integer of 2 or more) pixel portions that perform photoelectric conversion and are arranged along the first direction;
• and
• M circuit units provided corresponding to the M pixel arrays,
• wherein each of the M circuit units includes:
• N charge amplifiers each of which includes an operational amplifier and a capacitive portion, which is connected between an inverting input terminal and an output terminal of the operational amplifier and in which a charge signal output from any one of the N pixel portions of the corresponding pixel array is accumulated, and which convert the charge signal into a voltage signal;
• and
• a switch circuit for switching connection states between the N pixel portions and the capacitive portions of the N charge amplifiers, wherein the switch circuit includes N×N switches configured such that each of the N pixel portions is selectively connectable to each of the capacitive portions of the N charge amplifiers, and
• in each of the M circuit units, the switch circuit switches the connection state so that the capacitive portion in which the charge signal output from the pixel portion is accumulated is switched in accordance with an arrangement order of the N pixel portions along the first direction.