公开(公告)号：US6122212A

公开(公告)日：2000-09-19

申请号：US71669

申请日：1998-05-01

申请人： John Henry Bui ,  Chien-fan Wang

发明人： John Henry Bui ,  Chien-fan Wang

IPC分类号： G11C7/02 ,  G11C7/06

CPC分类号： G11C7/062

摘要： A sense amplifier for detecting a logic state of a memory cell includes a voltage amplifier, a current mirror, and a feedback circuit. The voltage amplifier couples to the memory cell and the current mirror. The feedback circuit couples to the current mirror and an input of the sense amplifier. The feedback circuit can be implemented with a transistor, a switch, a transmission gate, or the like. The feedback circuit is selectively enabled to quickly charge or discharge the voltage at the input of the sense amplifier to a trip voltage of the sense amplifier. Whether charging or discharging is performed is dependent on the voltage then existing at the input node. The amount of charging and discharging current can also be based on other circuit considerations, such as the required charge time, and so on. When the voltage at the input reaches a predetermined voltage range, the feedback circuit is disabled.

摘要翻译： 用于检测存储单元的逻辑状态的读出放大器包括电压放大器，电流镜和反馈电路。 电压放大器耦合到存储单元和电流镜。 反馈电路耦合到电流镜和读出放大器的输入端。 反馈电路可以用晶体管，开关，传输门等来实现。 选择性地使反馈电路能够快速地将感测放大器的输入端的电压充电或放电到读出放大器的跳闸电压。 是否执行充电或放电取决于输入节点处存在的电压。 充电和放电电流的量也可以基于其他电路考虑，例如所需的充电时间等等。 当输入电压达到预定的电压范围时，反馈电路被禁止。