SUCCESSIVE APPROXIMATION REGISTER ANALOG DISITAL CONVERTER FOR EXTRACTING MULTI-CHANNEL BI0-SIGNAL AND ANALOG DIGITAL CONVERTING METHODE USING THE SAME

摘要

A successive approximation register analog-to-digital converter and an analog-to-digital converting method using the same are disclosed. According to the present invention, the successive approximation register analog-to-digital converter comprises: a first split capacitor array for converting digital signals inputted in sequence into analog signals and generating a reference voltage signal; a second split capacitor array for selectively holding one among a plurality of analog input voltages inputted from the outside and generating a hold voltage signal; a comparison unit for comparing the reference voltage signal with the hold voltage signal and outputting a comparison signal; and a signal processing unit for sequentially outputting the digital signals to the first split capacitor array by using the comparison signal and outputting a channel control signal to the second split capacitor array, wherein the second split capacitor array generates the hold voltage signal with respect to one among the plurality of analog input voltages according to the channel control signal.