Patent ID: 8749415

Claim:
An analog-to-digital converter, comprising: a modulation unit disposed corresponding to at least one column line, the modulation unit configured to sequentially perform delta-sigma modulation on an analog input signal and at least one residue voltage to generate digital bit stream signals, the analog input signal being input through the at least one column line, the at least one residue voltage being generated by performing the delta-sigma modulation on the analog input signal, the modulation unit including a first modulator disposed corresponding to a first column line, the first modulator configured to perform delta-sigma modulation on a first input signal of the analog input signal to generate a first residue voltage and a first digital bit stream signal, the first input signal being input through the first column line; and a second modulator configured to perform delta-sigma modulation on the first residue voltage to generate a second digital bit stream signal; and a digital signal generation unit configured to generate a digital signal corresponding to the analog input signal based on the digital bit stream signals.