Chunlei Shi James Wilson Mohammed Ismail Design techniques for improving intrinsic accuracy of resistor string DACs. 400-403 2001 conf/iscas/2001 ISCAS (1) http://doi.ieeecomputersociety.org/10.1109/ISCAS.2001.921877 db/conf/iscas/iscas2001-1.html#ShiWI01