COMPARATOR, ANALOG-TO-DIGITAL CONVERTING SYSTEM AND METHOD OF DRIVING THE SAME

摘要

A comparator may include: a first comparison unit suitable for generating a comparison voltage by performing a comparison operation between a pixel signal and a ramp signal; a time point detection unit suitable for detecting specific timing points of the comparison operation in response to the comparison voltage and a reference voltage, and generating a detection signal corresponding to the specific timing points; a period determination unit suitable for determining an additional supply period in response to the detection signal and a period determination control signal; and an additional current supply unit suitable for supplying an additional current to the first comparison unit during the additional supply period.

主权项

1. A comparator comprising:
a first comparison unit suitable for generating a comparison voltage by performing a comparison operation between a pixel signal and a ramp signal; a time point detection unit suitable for detecting specific timing points of the comparison operation in response to the comparison voltage and a reference voltage, and generating a detection signal corresponding to the specific timing points; a period determination unit suitable for determining an additional supply period in response to the detection signal and a period determination control signal; and an additional current supply unit suitable for supplying an additional current to the first comparison unit during the additional supply period.