Signal processing circuit

摘要

A signal processing circuit includes: an AD converter configured to quantize an input signal, whose amplitude changes in accordance with temperature, within a set voltage range and convert the quantized input signal into a digital signal; and a setting circuit configured to set the voltage range so as to be wider when the input signal is greater in amplitude in accordance with the temperature and so as to be narrower when the input signal is smaller in amplitude in accordance with the temperature.