A photodetection device according to the present disclosure includes: a first pixel that is configured to generate a first pixel signal; a reference signal generator that is configured to generate a reference signal; and a first converter that includes a first buffer circuit and a first comparison circuit and is configured to convert the first pixel signal into a digital code, the first buffer circuit configured to output a first signal corresponding to the reference signal from an output terminal, and the first comparison circuit configured to perform a comparison operation on the basis of the first pixel signal and the first signal.