High-precision analog-to-digital converter with adjustable measuring range

A range-adjustable high-precision analog-to-digital converter belongs to the field of analog integrated circuit design and comprises a configurable level conversion unit, a voltage follower, an analog-to-digital converter and a configurable register. Wherein the configurable level conversion unit can preprocess a voltage signal to be detected and adjust an input voltage to be detected according to configuration, and the voltage follower can enhance the driving capability of the signal, so that the voltage signal entering the analog-to-digital converter is more stable. The analog-to-digital converter has the advantages of improving the flexibility of the analog-to-digital converter, expanding the input signal range, improving the precision of the analog-to-digital converter and the like. 一种量程可调的高精度模数转换器，属于模拟集成电路设计领域，包括可配置电平转换单元、电压跟随器、模数转换器和可配置寄存器。其中，可配置电平转换单元可对待检测的电压信号进行预处理，根据配置调整待检测的输入电压，电压跟随器能够增强信号的驱动能力，使进入模数转换器的电压信号更稳定。本发明具有可提高模数转换器的灵活性，扩展输入信号范围，提升模数转换器精度等诸多优点。