公开(公告)号：US5834953A

公开(公告)日：1998-11-10

申请号：US756203

申请日：1996-11-25

申请人： Kevin W. Glass ,  John R. Spence ,  Lester J. Pastuszyn ,  William W. Decker

发明人： Kevin W. Glass ,  John R. Spence ,  Lester J. Pastuszyn ,  William W. Decker

IPC分类号： G01R19/00 ,  G01R31/30 ,  G11C7/06

CPC分类号： G11C7/065 ,  G01R31/3004 ,  G01R19/0092 ,  G11C2207/063

摘要： A high speed current sense amplifier useful in memory devices, which includes a current-to-voltage amplifier that is coupled to a voltage amplifier. The current-to-voltage amplifier has an input impedance that is lower than its output impedance. The voltage amplifier has an input impedance that is larger than the input impedance of the current-to-voltage amplifier. The current sense amplifier can sense the current relationship between two current inputs in about 200 pico-seconds. Embodiments of the current sense amplifier enable current sensing either near the power supply voltage or near ground, thus eliminating the need for intermediate voltages. Embodiments of the current sense amplifier draw current from the current inputs only during the 200 pico-second sensing time and does not require external latching circuitry.

摘要翻译： 一种用于存储器件的高速电流检测放大器，其包括耦合到电压放大器的电流 - 电压放大器。 电流 - 电压放大器的输入阻抗低于其输出阻抗。 电压放大器的输入阻抗大于电流 - 电压放大器的输入阻抗。 电流检测放大器可以以大约200皮秒的速度感测两个电流输入之间的电流关系。 电流检测放大器的实施例使得能够在电源电压附近或靠近接地处感测电流，从而消除对中间电压的需要。 电流检测放大器的实施例仅在200微秒的感测时间内从电流输入端抽取电流，并且不需要外部锁存电路。