公开(公告)号：US5396467A

公开(公告)日：1995-03-07

申请号：US220248

申请日：1994-03-30

Applicant: Ding-Jen Liu ,  Jyh-Jen Cho

Inventor： Ding-Jen Liu ,  Jyh-Jen Cho

IPC: G11C7/06 ,  G11C16/28 ,  G11C7/00

CPC classification number: G11C7/062 ,  G11C16/28

Abstract: A two-phase sense amplifier includes a data sensing circuitry including a presetting current detecting circuit for allowing the sense amplifier to be in a presetting phase when an X-decoder decodes an address of a selected word line of a selected memory cell and a Y-decoder decodes an address of a selected bit line of the selected memory cell and then for setting a voltage level of the selected bit line to be around a switching point and an evaluating current detecting circuit for allowing the sense amplifier to be in an evaluating phase after the voltage level of the selected bit line is around the switching point in order to sense a current in the selected cell for converting the current into a voltage output, a dummy cell circuitry electrically connected to the data sensing circuitry for providing a reference voltage to the data sensing circuitry, and a differential amplifier electrically connected to the data sensing circuitry and the dummy cell circuitry for accepting and comparing the voltage output and the reference voltage to sense data of the selected memory cell. Such a sense amplifier can have a relatively high sensing speed.

Abstract translation: 一个双相位读出放大器包括一个数据检测电路，包括一个预置电流检测电路，用于当X解码器解码所选择的存储单元的选定字线的地址时，允许读出放大器处于预设阶段， 解码器对所选存储单元的所选位线的地址进行解码，然后将所选位线的电压电平设置在开关点周围，以及评估电流检测电路，用于允许读出放大器处于评估阶段 所选位线的电压电平在开关点周围，以便检测所选择的单元中的电流以将电流转换成电压输出;电连接到数据感测电路的虚设单元电路，用于向基准电压提供参考电压 数据感测电路和电连接到数据感测电路的差分放大器和用于接受和比较的虚拟单元电路 g电压输出和参考电压以检测所选存储单元的数据。 这种感测放大器可以具有相对高的感测速度。