A speed-precision reconfigurable multi-channel analog-to-digital converter

Abstract

This invention discloses a speed- and accuracy-reconfigurable multi-channel analog-to-digital converter (ADC), comprising: a clock configuration module, a reference voltage configuration module, an analog-to-digital conversion module, and an accuracy reconfiguration module. The clock configuration module is used to divide a clock signal and select the output of the divided clock according to a mode selection signal. The mode selection signal is used to configure the sampling rate and quantization accuracy of the multi-channel ADC. The reference voltage configuration module is used to generate 2... n One voltage signal, based on the mode selection signal, corresponds to 2. n Select the output from the selected voltage signals to obtain 2 n One reference voltage; analog-to-digital conversion module, including 2 n One analog-to-digital converter sub-channel. Precision reconstruction module, used to utilize 2 n Each correction digit code corresponds to 2 n The path quantization results are corrected. The speed-accuracy reconfigurable multi-channel analog-to-digital converter provided by this invention has higher hardware utilization efficiency and can achieve higher analog-to-digital conversion speed.

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