ANALOG TO DIGITAL CONVERTER HAVING FAST CONVERSION FUNTION

摘要

An analog to digital converter having a fast conversion function is provided to synchronize each operation signals of an analog to digital converter to perform a fast conversion operation. An analog to digital converter(100) having a fast conversion function includes an integrating unit(110) storing an analog signal and a feedback analog signal according to a plurality of switching signals. The integrating unit integrates the stored analog signal. A quantizing unit(120) quantizes an analog signal integrated in the integrating unit to a digital signal with a plurality of bits. A data weighted averaging unit(130) averages the digital signal applied from the quantizing unit through a multi-step bit shifting process according to a predetermined reference signal. A first register(140) converts a current level of the digital signal applied from the data weighted averaging unit to a predetermined current level according to the predetermined reference signal. A digital to analog converter(150) converts the digital signal applied from the first register to the feedback analog signal according to the switching signal.