Analog-to-digital conversion circuit, chip, and recording device

An analog-to-digital conversion circuit, comprising:

• a main path module;
• a dynamic range enhancement module;
• and
• a dynamic digital-to-analog conversion module;
• wherein the dynamic digital-to-analog conversion module comprises a digital-to-analog conversion array;
• wherein the main path module is configured to:
• convert an analog signal and an analog feedback signal from the dynamic digital-to-analog conversion module into a digital signal to be processed,
• output the digital signal to be processed to the dynamic range enhancement module, and
• obtain a digital signal output according to the digital signal to be processed and a digital gain signal from the dynamic range enhancement module;
• wherein the dynamic range enhancement module is configured to:
• perform dynamic quantization processing on the digital signal to be processed to obtain at least one control signal,
• output the at least one control signal to the dynamic digital-to-analog conversion module, and
• generate the digital gain signal and output the digital gain signal to the main path module;
• wherein the dynamic digital-to-analog conversion module is configured to:
• dynamically control on and off of each of digital-to-analog converter (DAC) elements in the digital-to-analog conversion array according to the at least one control signal, and
• output the analog feedback signal to the main path module.