Ka Leong Tsang Jie Yuan The Design and Optimization of a 25 kS/s 10 bit Micropower Current S/H Cell for Weak Current Bio-medical Applications. 11-14 2008 DELTA http://doi.ieeecomputersociety.org/10.1109/DELTA.2008.121 conf/delta/2008 db/conf/delta/delta2008.html#TsangY08