Patent ID: 9509330
Filing Date: 2016-11-29
CPC Classification: H03M

Claim Text:
1. An analog-to-digital converter comprising: at least one multiplying digital-to-analog conversion circuit that includes an input node to which an input signal is supplied, an output node which supplies an output signal, and a quantizer which quantizes the input signal based on a reference voltage, wherein the output signal of the multiplying digital-to-analog conversion circuit is supplied to the input node of the multiplying digital-to-analog conversion circuit or to the input node of the multiplying digital-to-analog conversion circuit via a different multiplying digital-to-analog conversion circuit, wherein the multiplying digital-to-analog conversion circuit further includes: wherein the capacitance circuit includes: wherein the reference voltage is equivalently set in accordance with a capacity ratio between the capacitance elements in the capacitance circuit, and wherein, when the sampled input signal is amplified, the capacitance circuit supplies the amplified signal, which reflects the output from the quantizer, to the output node by the control circuit determining a voltage to be supplied to the second electrodes of the first capacitance element and the second capacitance element.