Sense amplifier

Sense amplifier is required during the data read and refresh operation from the memory concerned.

The lines which run along the columns are called bit-line and two such complementary bitlines are attached to a sense amplifier at the edge of the array.

The data in the cells is read or written by the same bit-lines which run along the top of the rows and columns.

[5] The sense amplifier operation in DRAM is quite similar to the SRAM, but it performs an additional function.

The data in DRAM chips is stored as electric charge in tiny capacitors in the memory cells.