Comparator, AD converter, solid-state imaging device, electronic device, and control method of comparator

摘要

The present disclosure relates to a comparator, an AD converter, a solid-state imaging device, an electronic device, and a control method of the comparator, which can reduce power consumption while improving the determination speed of the comparator. The comparison circuit operates with the first power supply voltage, and a differential input circuit that outputs a signal when the voltage of the input signal is higher than the voltage of the reference signal, and a second power supply voltage lower than the first power supply voltage Positive feedback circuit that accelerates the transition speed when the comparison result signal representing the comparison result of the voltage of the input signal and the reference signal is inverted based on the output signal from the differential input circuit, and the differential input And a voltage conversion circuit for converting an output signal of the circuit into a signal corresponding to a second power supply voltage, and configured such that a source voltage of the differential input circuit is a voltage lower than 0V. The present disclosure can be applied to, for example, an ADC or the like arranged for each pixel of a solid-state imaging device.