Input-output line sense ampifier having small currnet consumption and direct current
AssigneeSamsung Electronics Co., Ltd.
InventorJae-Yoon Sim
Life of this patent
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Abstract
An input-output line sense amplifier of a semiconductor memory device that consumes a small amount of current and direct current (DC), includes a current sensing circuit for sensing only a portion of the current through the input-output line and the complementary input-output line, a first amplifier operating from another portion of the sensed current and of the complementary current to amplify and invert a first detected output signal of the current sensing circuit, a second amplifier operating from yet another portion of the sensed current and of the complementary current to amplify and invert a second detected output signal of the current sensing circuit.
Claims11
An input-output line sense amplifier of a semiconductor memory device for sensing a signal current and a complementary current, the input-output line sense amplifier comprising:
- a current sensing circuit for sensing a first portion of the signal current and a first portion of the complementary current;
- a first amplifier operating from a second portion of the signal current and a second portion of the complementary current to generate an output signal from a first detected output of the current sensing circuit;
- a second amplifier operating from a third portion of the signal current and a third portion of the complementary current to generate an output signal from a second detected output of the current sensing circuit;
- and
- a latch to receive the output signals generated by the first and second amplifiers.
An input-output line sense amplifier of a semiconductor memory device which senses an input-output line and a complementary input-output line transmitting data read from a memory cell, the input-output line sense amplifier comprising:
- a current sensing circuit for sensing current through the input-output line and the complementary input-output line;
- a first amplifier for passing the same amount of a first current from the input-output line and the complementary input-output line, amplifying and inverting an output signal of the current sensing circuit using the first current, and outputting an amplified and inverted signal to a first output terminal;
- and
- a second amplifier for passing the same amount of a second current from the input-output line and the complementary input-output line, amplifying and inverting a complementary output signal of the current sensing circuit using the second current, and outputting an amplified and inverted signal to a second output terminal.
Dependencies are inferred from the claim text.