Guoyuan Fu H. Alan Mantooth Jia Di A 12-bit CMOS current steering D/A converter with a fully differential voltage output. 398-404 2011 ISQED https://doi.org/10.1109/ISQED.2011.5770757 conf/isqed/2011 db/conf/isqed/isqed2011.html#FuMD11