Abstract: The photoelectric conversion device includes a pixel including a photoelectric conversion element and outputting a signal corresponding to an amount of charge generated in the photoelectric conversion element, an output line from which a signal of the pixel is output, a clip circuit constituting a source follower circuit and including a transistor having a source connected to the output line and an interconnection connected to a gate of the transistor, and a voltage supply circuit configured to supply a first voltage and a second voltage to the interconnection. A driving power when the interconnection is controlled to the first voltage by the voltage supply circuit and a driving power when the interconnection is controlled to the second voltage by the voltage supply circuit is different.

Abstract: A disclosed comparator includes a comparison circuit that performs comparison between an input signal and a reference signal and changes a level of a signal to be output to a first node in accordance with a result of the comparison; and a positive feedback circuit including an amplifier unit that includes a current source load and outputs a signal in accordance with a potential of the first node to a second node and a feedback unit that positively feeds back a signal in accordance with a potential of the second node to the first node. The feedback unit includes a first transistor to which output of the amplifier unit is fed back and a switch that controls turning on or off of the first transistor.

Abstract: A circuit includes a comparator configured to compare an input signal and another signal and output a signal indicating a result of a comparison, and an element configured to limit an amplitude of the signal indicating the result of the comparison. In a case where a current flowing through the circuit is changed, the element is able to make an adjustment of a range of a change in the amplitude due to the change in the current.

Abstract: A photoelectric conversion device includes a plurality of pixels arranged to form a plurality of columns, a plurality of comparison circuits provided corresponding to the plurality of columns and including a first input node to which a pixel signal output from a pixel of a corresponding column is input and a second input node to which a reference signal is input, a plurality of buffer circuits provided between a reference signal line to which the reference signal is supplied and each of the second input nodes of the plurality of comparison circuits, and a first switch circuit configured to set a connection state between output nodes of the plurality of buffer circuits.

Abstract: A photoelectric conversion apparatus comprising: pixels; processors; and a controller. Each of the processors comprise a first column circuit and a second column circuit, each of which perform A/D conversion of converting, into a digital signal, one pixel signal output from the pixel arranged in a corresponding column of the plurality of columns. The controller comprises a generator configured to generate a first signal used in the A/D conversion, and a second signal different from the first signal and used in the A/D conversion. The apparatus further comprises a selector configured to receive the first signal and the second signal, and select and supply one of the first signal and the second signal to the second column circuit in a period in which the first signal is supplied to the first column circuit.

Abstract: A disclosed comparator includes a comparison circuit including a differential unit that compares an input signal with a reference signal and changes a level of a signal output to a first node in accordance with a result of comparison and an amplifier unit that includes a load element and outputs a signal in accordance with a potential of the first node to a second node, and a positive feedback circuit that is connected to the second node and a third node and changes a level of a signal at the third node at a rate higher than a change rate of a level of a signal at the second node in accordance with a change in a level of a signal at the second node.

Abstract: A photoelectric conversion apparatus comprises a first substrate having a light-receiving array and a plurality of driving lines for supplying control signals to the array and a second substrate having a first circuit that includes a driver circuit group configured to generate the control signals and is configured to function as a vertical scanning circuit which supplies the control signals to at least some of the driving lines and a second circuit including a circuit group having the same arrangement as that of the driver circuit group. The second circuit overlaps the at least some driving lines. The at least some driving lines include a driving line not electrically connected to the second circuit. The second substrate includes, at a position overlapping the second circuit, an electrically conductive line used for power supply or transfer of a signal different from the control signals.

Abstract: A photoelectric conversion device comprising: a pixel signal line configured to transmit a pixel signal; a ramp wire configured to transmit a ramp signal; a comparator configured to compare the pixel signal to the ramp signal; and a capacitive element disposed to have at least a part thereof overlapping the ramp wire in plan view.

Abstract: Provided is a photoelectric conversion device including a pixel array in which pixels, each of the pixels including a photoelectric conversion element, are arranged in columns, a signal line that is arranged corresponding to one of the columns in the pixel array and to which a signal from the pixel is output, a current source configured to supply the signal line with a driving current; a current adjusting unit configured to control the driving current into a current amount including a first current amount and a second current amount greater than the first current amount, and an assisting element configured to assist a change in a current flowing through the signal line when the driving current changes from the first current amount to the second current amount. The first current amount is a current amount in a state where the driving current is disconnected.

Abstract: A circuit substrate to be laminated on another substrate includes a plurality of signal lines, a plurality of input portions respectively connected to the plurality of signal lines, and each configured to receive a signal from an outside of the circuit substrate, a plurality of signal processing circuits respectively connected to the plurality of input portions via the plurality of signal lines, and a plurality of transistors configured to supply a predetermined voltage to the plurality of signal lines in a state where no signal is input to the plurality of input portions from the outside. A part of the plurality of transistors is connected to a first control line, and another part of the plurality of transistors is connected to a second control line different from the first control line.

Abstract: The photoelectric conversion device includes a pixel including a photoelectric conversion element and outputting a signal corresponding to an amount of charge generated in the photoelectric conversion element, an output line from which a signal of the pixel is output, a clip circuit constituting a source follower circuit and including a transistor having a source connected to the output line and an interconnection connected to a gate of the transistor, and a voltage supply circuit configured to supply a first voltage and a second voltage to the interconnection. A driving power when the interconnection is controlled to the first voltage by the voltage supply circuit and a driving power when the interconnection is controlled to the second voltage by the voltage supply circuit is different.

Abstract: Provided is a signal processing device including a first substrate, a signal generation circuit arranged in the first substrate and configured to generate a reference signal to be used for comparison with a signal output from a pixel, a circuit element arranged in the first substrate and different from the signal generation circuit, and a contact region in which a contact connecting the first substrate and a wiring layer arranged over the first substrate is arranged. In a plan view with respect to the first substrate, the contact region is arranged between the signal generation circuit and the circuit element.

Abstract: A comparator according to an embodiment of the present disclosure includes a first differential transistor and a second differential transistor forming a differential pair, a first load transistor and a second load transistor respectively provided corresponding to the first differential transistor and the second differential transistor, and a first cascode transistor connected in cascode between the first differential transistor and the first load transistor.

Abstract: A photoelectric conversion apparatus comprises a first substrate having a light-receiving array and a plurality of driving lines for supplying control signals to the array and a second substrate having a first circuit that includes a driver circuit group configured to generate the control signals and is configured to function as a vertical scanning circuit which supplies the control signals to at least some of the driving lines and a second circuit including a circuit group having the same arrangement as that of the driver circuit group. The second circuit overlaps the at least some driving lines. The at least some driving lines include a driving line not electrically connected to the second circuit. The second substrate includes, at a position overlapping the second circuit, an electrically conductive line used for power supply or transfer of a signal different from the control signals.

Abstract: A circuit includes a comparator configured to compare an input signal and another signal and output a signal indicating a result of a comparison, and an element configured to limit an amplitude of the signal indicating the result of the comparison. In a case where a current flowing through the circuit is changed, the element is able to make an adjustment of a range of a change in the amplitude due to the change in the current.

Abstract: An apparatus includes a plurality of pixels arranged in an array, a first group of pixels that are arranged in a first direction among the plurality of pixels, a first line to which the first group is connected, a second group of pixels that are arranged in the first direction among the plurality of pixels, and a second line to which the second group is connected. The first line is connected to a first source. The second line is connected to a second source. The apparatus further includes a control unit configured to: (1) perform control to increase a current flowing through the second source while performing control to decrease a current flowing through the first source, or (2) suppress a variation of total amount of flowing current by changing the current flowing through the second source in response to a change in the current flowing through the first source.

Abstract: Provided is a photoelectric conversion device including a pixel array in which pixels, each of the pixels including a photoelectric conversion element, are arranged in columns, a signal line that is arranged corresponding to one of the columns in the pixel array and to which a signal from the pixel is output, a current source configured to supply the signal line with a driving current; a current adjusting unit configured to control the driving current into a current amount including a first current amount and a second current amount greater than the first current amount, and an assisting element configured to assist a change in a current flowing through the signal line when the driving current changes from the first current amount to the second current amount. The first current amount is a current amount in a state where the driving current is disconnected.

Abstract: A disclosed comparator includes a comparison circuit including a differential unit that compares an input signal with a reference signal and changes a level of a signal output to a first node in accordance with a result of comparison and an amplifier unit that includes a load element and outputs a signal in accordance with a potential of the first node to a second node, and a positive feedback circuit that is connected to the second node and a third node and changes a level of a signal at the third node at a rate higher than a change rate of a level of a signal at the second node in accordance with a change in a level of a signal at the second node.

Abstract: A disclosed comparator includes a comparison circuit that performs comparison between an input signal and a reference signal and changes a level of a signal to be output to a first node in accordance with a result of the comparison; and a positive feedback circuit including an amplifier unit that includes a current source load and outputs a signal in accordance with a potential of the first node to a second node and a feedback unit that positively feeds back a signal in accordance with a potential of the second node to the first node. The feedback unit includes a first transistor to which output of the amplifier unit is fed back and a switch that controls turning on or off of the first transistor.

Abstract: An imaging apparatus includes a plurality of pixels, a plurality of signal lines, and a plurality of comparators. The imaging apparatus further includes a first switch and a second switch. The first switch includes a first terminal configured to receive signal from one of the signal lines is input, and a second terminal connected to an input node of one of the comparators. The second switch includes a first terminal connected to the input node of the one comparator, and a second terminal to which a signal from another one of the signal lines is input.