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    • 4. 发明申请
    • CURRENT SENSE AMPLIFIER
    • 电流检测放大器
    • WO2006027373A1
    • 2006-03-16
    • PCT/EP2005/054430
    • 2005-09-07
    • INFINEON TECHNOLOGIES AGGOGL, DietmarVIEHMANN, Hans-Heinrich
    • GOGL, DietmarVIEHMANN, Hans-Heinrich
    • G11C7/06G11C11/16
    • G11C7/04G11C7/02G11C7/062G11C7/067G11C11/16G11C2207/063
    • A high-speed current sense amplifier has complementary reference cells and load devices that eliminate capacitive mismatch contributions. The current sense amplifier includes a voltage comparator, a first clamping device coupled between a first input of the voltage comparator and a first input signal node. The first clamping device is coupled to a reference voltage. A second clamping device is coupled between the second input of the voltage comparator and a second input signal node. The second clamping device is also coupled to the reference voltage. A current mirror is coupled between the first and second input of the voltage comparator and is coupled to an active capacitance balancing circuit. The active capacitance balancing circuit may be combined with the voltage comparator. Equalization devices may be coupled between the first and second inputs of the voltage comparator, and between the first input signal node and the second input signal node.
    • 高速电流检测放大器具有补充参考电池和负载装置,可消除电容失配的贡献。 电流检测放大器包括电压比较器,耦合在电压比较器的第一输入端和第一输入信号节点之间的第一钳位装置。 第一夹紧装置耦合到参考电压。 第二钳位装置耦合在电压比较器的第二输入端和第二输入信号节点之间。 第二钳位装置也耦合到参考电压。 电流镜耦合在电压比较器的第一和第二输入端之间并耦合到有源电容平衡电路。 有源电容平衡电路可以与电压比较器组合。 均衡装置可以耦合在电压比较器的第一和第二输入之间,以及第一输入信号节点和第二输入信号节点之间。