PIPELINED ANALOG DIGITAL CONVERTOR

摘要

PURPOSE: A pipelined ADC(Analog To Digital Converter) is provided to simply perform a logical correction operation by performing a binary shift when data errors are corrected. CONSTITUTION: A conversion stage circuit(1100) includes a plurality of conversion stages(1110-11K0) which is serially connected. The conversion stage converts inputted voltages into B bits of digital codes. The conversion stage outputs residual voltages to a rear end. A digital correction circuit(1200) performs a shift operation and a logic correcting operation by adding a predetermined value to digital codes outputted from the conversion stage circuit. A clock signal generator(1300) generates clock signals necessary for a conversion operation by receiving clock voltages. A reference voltage buffer(1400) generates reference voltages necessary for the conversion operation.