PIPELINED ANALOG-TO-DIGITAL CONVERTER

The present invention provides a pipelined analog-to-digital converter. In the pipelined analog-to-digital converter, at least one pipeline stage comprises an N-bit sub-analog-to-digital conversion module, a first sub-digital-to-analog conversion module, a second sub-digital-to-analog conversion module, and a switched capacitor amplification module; the first sub-digital-to-analog conversion module and the second sub-digital-to-analog conversion module separately receive and process 2N-1 digital signals, and correspondingly, 2*2N-1 switched capacitors are needed; however, in a traditional pipeline stage based on a structure of "an N-bit sub-analog-to-digital conversion module + a sub-digital-to-analog conversion module + a subtracter + a multiplier", the non-inverting input and inverting input of differential input comparison are completely symmetrical, and correspondingly, 2*2N switched capacitors are needed. Therefore, compared with a pipeline stage of a traditional structure, the present invention can effe