Patent 7595746 was granted and assigned to Teradyne on September, 2009 by the United States Patent and Trademark Office.
A digital-to-analog converter (DAC) includes coarse interpolation DACs configured to produce a current range based on an input digital signal, and fine interpolation DACs configured to produce an output current that is based on an input digital signal and that is within the current range produced by the coarse interpolation DACs.