Solid-state imaging device and imaging system

A solid-state imaging device, comprising:

• a first converter which converts an analog signal representing a pixel value to an upper bit of a digital signal including the upper bit and a lower bit;
• and
• a second converter which converts the analog signal to the lower bit of the digital signal,
• wherein the second converter includes:
• a first latch circuit which latches, as phase information, a plurality of clock signals upon conversion to the upper bit in the first converter, the plurality of clock signals having different phases;
• a conversion circuit which generates the lower bit of the digital signal by converting the phase information to a binary value;
• an adder;
• and
• a second latch circuit which latches an addition result of the adder, and
• the adder adds the binary value converted by the conversion circuit and a value latched by the second latch circuit.