DIVIDE-ADD CIRCUIT AND HIGH-RESOLUTION DIGITAL-TO-ANALOG CONVERTER USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a divide-add circuit and high-resolution digital-to-analog converter (DAC) using the same in which a high resolution of equal to or more than ten bits can be implemented in simple configuration. SOLUTION: The DAC includes a plurality of DAC units and a plurality of divide-add circuit units. The plurality of DAC units perform digital-analog (DA) conversion on an input digital code divided into a plurality of segments each composed of equal to or more than 2 bits. The plurality of divided-add circuit units are configured to generate a result of DA conversion on the entire input digital code by adding conversion results of respective DAC units in the DAC units from a DAC which performs DA conversion on a segment including an LSB of the input digital code, to a DAC unit which performs DA conversion on a segment including an MSB. COPYRIGHT: (C)2007,JPO&INPIT