COMPARATOR CIRCUIT, SOLID-STATE IMAGING APPARATUS, AND ELECTRONIC DEVICE

The present technology relates to a comparator circuit, a solid-state imaging apparatus, and an electronic device which enable to improve a frame rate. A comparator compares an analog signal with a reference signal, an amplification stage amplifies output of a comparing unit and has different output...

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Bibliographic Details
Main Authors OGAWA Koji, OIKE Yusuke
Format Patent
LanguageEnglish
Published 13.07.2017
Subjects
BASIC ELECTRIC ELEMENTS
BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
PULSE TECHNIQUE
SEMICONDUCTOR DEVICES
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Summary:The present technology relates to a comparator circuit, a solid-state imaging apparatus, and an electronic device which enable to improve a frame rate. A comparator compares an analog signal with a reference signal, an amplification stage amplifies output of a comparing unit and has different output change speeds in normal rotation and in reverse rotation, and a switch circuit fixes an input node or an output node of the amplification stage to a predetermined voltage in a predetermined period before a comparing operation by the comparator so that the amplification stage operates in a change direction having a higher output change speed. The present technology can be applied to a comparator circuit provided to an A/D converter of a CMOS image sensor.
Bibliography:Application Number: US201515324378