Lee-An Ho Shr-Lung Chen Chien-Hung Kuo Shen-Iuan Liu CMOS oversampling Sigma-Delta magnetic to digital converters. 388-391 2001 conf/iscas/2001 ISCAS (1) http://doi.ieeecomputersociety.org/10.1109/ISCAS.2001.921874 db/conf/iscas/iscas2001-1.html#HoCKL01