An A-D converter includes a group of resistors, a group of comparators, an encoder and an output unit. The output unit includes a correction circuit. An inverter constitutes the correction circuit. The encoder is shared in a case where the A-D converter converts an inputted analog signal to a two-bit...http://www.google.com/patents/US7474238?utm_source=gb-gplus-sharePatent US7474238 - Analog-to-digital converter
