ANALOG-TO-DIGITAL CONVERTER, IMAGE SENSOR INCLUDING THE SAME, AND CORE AMPLIFIER OF THE ANALOG-TO-DIGITAL CONVERTER
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Issued Date -
Sep 19, 2024
app pub date -
Mar 15, 2024
filing date -
Mar 17, 2023
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Abstract
An analog-to-digital converter of an image sensor includes a pixel load connected to a column line connected to a plurality of pixels, a pixel signal input terminal configured to receive a pixel signal through the column line, a ramp signal input terminal configured to receive a ramp signal compared with the pixel signal and operating as a source follower, a core amplifier configured to compare the pixel signal with the ramp signal, and output the pixel signal based on a comparison result, and an auto-zero switching unit configured to initialize the core amplifier.
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