COMPARATOR, AD CONVERTER, SOLID-STATE IMAGING APPARATUS, ELECTRONIC DEVICE, COMPARATOR CONTROL METHOD, DATA WRITING CIRCUIT, DATA READING CIRCUIT, AND DATA TRANSFERRING CIRCUIT

摘要

The present disclosure relates to a comparator, an AD converter, a solid-state imaging apparatus, an electronic device, a comparator control method, a data writing circuit, a data reading circuit, and a data transferring circuit that allow the power consumption of the comparator to be decreased while increasing the determination speed thereof. The comparator is provided with: a differential input circuit that operates at a first power-supply voltage and outputs a signal when the voltage of an input signal is higher than the voltage of a reference signal; a positive feedback circuit that operates at a second power-supply voltage lower than the first power-supply voltage and accelerates, on the basis of an output signal from the differential input circuit, a transition speed when a comparison-result signal representing a result of voltage comparison between the input signal and the reference signal is inverted; and a voltage conversion circuit that converts the output signal of the differential input circuit to a signal corresponding to the second power-supply voltage. The present disclosure can be applied to, for example, a comparator of a solid-state imaging apparatus etc.