Distributed read driver for data sensing in dynamic random access memory

A memory device, comprising:

• a plurality of memory arrays;
• and
• a plurality of sense amplifier circuits, wherein each sense amplifier circuit is associated with a respective memory array of the plurality of memory arrays for reading read data from the respective memory array,
• wherein each sense amplifier circuit includes a respective a local input/output (LIO)-global input/output (GIO) pulldown circuit and a respective GIO helper circuit,
• wherein the respective LIO-GIO pulldown circuit of each sense amplifier circuit is configured to transfer the read data from a respective differential pair of LIO lines to a respective differential pair of GIO lines,
• wherein the respective LIO-GIO pulldown circuit of each sense amplifier circuit is configured to amplify a difference between the respective differential pair of GIO lines, and
• wherein the respective GIO helper circuit of each sense amplifier circuit is configured to further amplify the difference between the respective differential pair of GIO lines.

A method of performing a read operation from a dynamic random access memory (DRAM) device, the method comprising:

• enabling, by a memory controller, a local input/output (LIO)-global input/output (GIO) pulldown circuit provided in a sense amplifier circuit associated with a DRAM array;
• based on the LIO-GIO pulldown circuit being enabled, transferring, by the LIO-GIO pulldown circuit, read data from a differential pair of LIO lines to a differential pair of GIO lines, including amplifying a difference between the differential pair of GIO lines;
• enabling, by the memory controller, a GIO helper circuit provided in the sense amplifier circuit;
• based on the GIO helper circuit being enabled, further amplifying, by the GIO helper circuit, the difference between the differential pair of GIO lines;
• and
• providing, by the differential pair of GIO lines, an amplified differential voltage representative of the difference between the differential pair of GIO lines having been amplified by the LIO-GIO pulldown circuit and the GIO helper circuit, to a data sense amplifier of a data input/output (I/O) circuit.