Solid-state image pickup apparatus, signal processing method for a solid-state image pickup apparatus, and electronic apparatus

An imaging device comprising:

• a pixel configured to output a pixel signal;
• a signal line configured to read out the pixel signal;
• and
• a comparator including:
• first and second differential transistors,
• a first capacitor disposed between a gate of the first differential transistor and a reference signal generation section configured to supply a reference signal,
• a second capacitor disposed between a gate of the second differential transistor and the signal line,
• a first circuit disposed between the gate of the first differential transistor and one of a source or a drain of the first differential transistor,
• a third transistor disposed between the gate of the first differential transistor and a first line, the first line being configured to receive a predetermined voltage,
• a second circuit disposed between the gate of the second differential transistor and one of a source or a drain of the second differential transistor, and
• a fourth transistor disposed between the gate of the second differential transistor and a second line, the second line being configured to receive the predetermined voltage.