APPARATUS AND METHOD OF CORRECTION CAPACITOR MISMATCH ERROR IN ALGORITHMIC ANALOG TO DIGITAL CONVERTER

摘要

PURPOSE: A mismatch correction completion method between a capacitor of an algorithmic analog to digital converter and a device thereof are provided to obtain the high definition between the capacitor by independently correcting the mismatch error. CONSTITUTION: A SHA(10) amplifies, samples, holds an inputted analog signal. A flash ADC(30) converts the analog signal into a digital signal. A MDAC(50) converts the digital signal to the analog signal by changing the location of the capacitor according to a control signal. A digital correction(70) corrects the error of the digital signal. The digital correction corrects the mismatch error in the digital output value between capacitor by being calculated the mismatch error digital.