Skhynix Inc.

Oh Jun Kwon

Sun Young Lee

Min Seok Shin

Jeong Eun Song

Sung Uk Seo

Han Sang Kim

Yu Jin Park

Kang Bong Seo

Hak Soon Kim

Eun Chang Lee

Hoo Chan Lee

Jin Seon Kim

Jin Uk Jeon

An image sensing device includes a first sampling circuit suitable for sampling a reference ramp signal as a ramp signal; a switching circuit suitable for sequentially outputting first and second pixel signals to a common node based on first and second control signals; a second sampling circuit suitable for sampling the first and second pixel signals, which are sequentially outputted through the common node, as a measurement signal; a comparison circuit suitable for comparing the ramp signal with the measurement signal and generating a comparison signal corresponding to a comparison result; and a count circuit suitable for generating a count signal, which corresponds to a voltage level of the measurement signal, based on the comparison signal and a clock signal.

Image sensing device using a single analog to digital conversion operation on pixel signals and operating method thereof

An analog-to-digital converting circuit includes: an analog-to-digital converter suitable for performing an analog-to-digital conversion on pixel signals of a plurality of pixels provided in a pixel array; a ramp signal generator suitable for providing a ramp signal to the analog-to-digital converter; and an auto-zero controller suitable for providing a reference voltage to the analog-to-digital converter to perform an auto-zeroing operation by using a row pixel for which a readout operation is performed by the analog-to-digital converter.

Analog-to-digital converting circuit, image sensing device and operation method thereof

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Gyeonggi-do, South Korea

Oh Jun Kwon