BIAS SENSING IN DRAM SENSE AMPLIFIER

摘要

PROBLEM TO BE SOLVED: To improve refresh performance in a DRAM (Dynamic Random Access Memory) sense amplifier by providing bias sensing suitable for the DRAM sense amplifier.

SOLUTION: Voltage coupling/decoupling devices 134 and 144 are provided within DRAM devices for improving the bias sensing of sense amplifiers and thus the refresh performance. The voltage coupling/decoupling devices couple or decouple bias voltage from corresponding digit lines (lines 138 and 148 coupled to the sense amplifiers). By coupling and decoupling voltage from the digit lines, the time interval between refresh operations can be increased.

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