| 摘要 |
A method for preventing a coupling noise in an amplifying circuit is provided to improve a sensing voltage margin and to reduce the size of a cell by removing a coupling noise in a sensor amplifier without increasing a layout area by using a shield plug and a dual layer. A method for preventing a coupling noise in an amplifying circuit includes the step of: using at least one of a method which forms a sensing line into a dual layer and a method which forms a shield plug between the sensing lines of a sensor amplifier terminal. A top cell array and a bottom cell array share a sensor amplifier commonly. A bit line(BL) and a bit line bar(/BL) on the cell array, and both amplifying terminals of the sensor amplifier are composed of the same material using the same layer process. The shield plug is formed between the bit line(BL) and the bit line bar(/BL) so that a coupling capacitance does not exist between the bit line(BL) and the bit line bar(/BL). |
