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Regulating method of matching coefficient of induction amplifier

A technology of inductive amplifier and matching coefficient, which is applied in the field of adjusting the matching coefficient, can solve problems such as the end of the service life of the storage unit and the inability of the inductive amplifier to detect accurately, and achieve the effect of accurately detecting the input current

Inactive Publication Date: 2012-03-21
GRACE SEMICON MFG CORP
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Problems solved by technology

But the working time of the storage unit in the semiconductor memory is too long, for example, after the number of erasing reaches 100 to 100,000 times, the output current of the storage unit will decrease accordingly. At this time, since the reference current remains unchanged, the sense amplifier of the adaptive adjustment matching coefficient method It will not be able to accurately detect whether the storage unit stores a "0" or "1" bit, and the service life of the storage unit will end prematurely

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  • Regulating method of matching coefficient of induction amplifier
  • Regulating method of matching coefficient of induction amplifier
  • Regulating method of matching coefficient of induction amplifier

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Embodiment Construction

[0016] Aiming at the defect that the above-mentioned matching method for adaptively adjusting the matching coefficient of the induction amplifier produces misjudgment when the input current and the output current are not equal, the present invention provides a method that can adaptively adjust the matching coefficient of the induction amplifier according to the input current.

[0017] When the erasing times of the storage unit reach 100 to 100,000 times, the output current of the storage unit decreases accordingly. At this time, the present invention uses the average current of the storage unit or a plurality of storage units as the first input current, and then according to the first input current The matching coefficient of the sense amplifier is adjusted so that the sense amplifier can always accurately detect the output current of the storage unit in time, thereby judging that the storage unit stores “0” or “1” bit. Since different memory cells have different erasing times,...

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Abstract

The invention discloses a regulating method of a matching coefficient of an induction amplifier, which comprises the following steps: inputting a first current and a second reference current, wherein the first current is not equal to the second reference current; detecting induced voltage; and regulating the matching coefficient of the induction amplifier according to the induced voltage. By means of the method, the matching coefficient of the induction amplifier is regulated in self-adaptation mode according to different input current, and the induction amplifier is led to achieve the effect of accurately detecting the different input current.

Description

technical field [0001] The invention relates to the field of inductive amplifiers, in particular to a method for adjusting the matching coefficient of the inductive amplifier. Background technique [0002] Sense amplifiers are often used in semiconductor memories, such as to detect the difference between the bit line current on the memory cell and the reference current, so as to determine whether the memory cell stores a "0" or "1" bit. Such as figure 1 As shown, the traditional sense amplifier mainly includes MOS transistors M2, M3, M5 and M6. Wherein, M3 matches the storage unit M4, and the output current I on M4 can be cell The output current mirrored to M3, that is, I cell = I m3 ; M2 is matched with the storage unit M1, and the output current I on M1 can be cell The output current mirrored onto M2, that is, I ref = I m2 ; M5 matches the storage unit M6, i.e. I m5 = I m6 . When the sense amplifier is used to test the memory cell M4 storage bit is "0" or "1", du...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11C7/06
Inventor 杨光军
Owner GRACE SEMICON MFG CORP