There is provided a semiconductor memory device that can calculate an offset voltage of a bit line sense amplifier. The semiconductor memory device includes a cell array, an edge bit line sense amplifier for amplifying data of an edge cell array, and a power supply part for applying a predetermined voltage...http://www.google.de/patents/US7283412?utm_source=gb-gplus-sharePatent US7283412 - Bit line sense amplifier and semiconductor memory device having the same
