ANALOG DIGITAL CONVERTER AND IMAGE SENSOR HAVING THE SAME

摘要

PURPOSE: An analog digital converter and an image sensor including the same are provided to implement high speed, high resolution, and low power of an image sensor. CONSTITUTION: A pixel array(110) is arranged in a matrix shape. The pixel array includes a plurality of pixels(111). An EC-ADC(Extended Analog Digital Converter)(140) performs first analog digital conversion for converting an output signal of the pixel array into a digital signal. The EC-ADC obtains residue by using the output signal of the pixel array. The EC-ADC performs second analog digital conversion by using the residue.