Dynamic semiconductor memory device having sense amplifier with compensated offset voltage

摘要

A dynamic random access memory, which comprises a substrate, a dynamic memory cell located on the substrate, a pair of bit lines to read out data from the cell and/or write data to the cell, a plurality of word lines, connected to the bit lines, to select a desired memory cell, a differential sense amplifier having an output line, the differential sense amplifier amplifying data from the pair of bit lines and transferring the amplified data to the output lines; means for precharging a first bit line of the pair of bit lines to a reference voltage and a second bit line of the pair of bit lines to a second voltage exceeding the reference voltage by the amount of an input offset voltage of the sense amplifier.