| CPC H04N 25/75 (2023.01) [H04N 25/77 (2023.01); H03M 1/12 (2013.01); H04N 25/671 (2023.01)] | 20 Claims |
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1. An image sensing device comprising:
a pixel array including a plurality of pixels; and
an analog-to-digital converter (ADC) configured to convert an analog signal into a digital signal,
wherein the ADC includes:
a first circuit configured to receive the analog signal from a selected pixel among the plurality of pixels and generate a first output signal; and
a second circuit including a select transistor configured to apply a voltage to a floating node electrically connected to the select transistor based on the first output signal,
wherein the second circuit further includes:
a capacitor connected in parallel between a gate and a drain of the select transistor;
a control transistor connected between the select transistor and the floating node, and configured to adjust the voltage applied to the floating node in response to a second power supply voltage;
a reset transistor connected between the floating node and a ground, and configured to reset the voltage applied to the floating node, and
an output circuit connected to the floating node and configured to output the digital signal based on the applied voltage to the floating node, and
wherein the select transistor is configured to be applied with the second power supply voltage.
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