Amplifier, and analog-to-digital conversion circuit and image sensor including the same
An analog-to-digital conversion circuit includes a first amplifier that generates a first output signal by comparing a pixel signal output from a pixel array with a ramp signal, and a second amplifier that generates a comparison signal based on the first output signal. The first amplifier includes a...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
07.04.2020
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Subjects | |
Online Access | Get full text |
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Summary: | An analog-to-digital conversion circuit includes a first amplifier that generates a first output signal by comparing a pixel signal output from a pixel array with a ramp signal, and a second amplifier that generates a comparison signal based on the first output signal. The first amplifier includes a first current source that generates a first bias current in a first operation period and a second operation period, and a second current source that generates a second bias current in the first operation period. The analog-to-digital conversion circuit converts an analog signal output from the pixel array into a digital signal. |
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Bibliography: | Application Number: US201816008186 |