公开(公告)号：US09224437B2

公开(公告)日：2015-12-29

申请号：US14068653

申请日：2013-10-31

Applicant: GLOBALFOUNDRIES Inc.

Inventor： John E. Barth, Jr. ,  Abraham Mathews ,  Donald W. Plass ,  Kenneth J. Reyer

IPC: G11C7/06 ,  G11C11/4091 ,  G11C7/10 ,  G11C7/12 ,  G11C11/4094

CPC classification number: G11C7/067 ,  G11C7/1048 ,  G11C7/12 ,  G11C11/4091 ,  G11C11/4094

Abstract: A single-ended input sense amplifier uses a pass device to couple the input local bit-line to a global bit-line evaluation node. The sense amplifier also includes a pair of cross-coupled inverters, a first inverter of which has an input that coupled directly to the global bit-line evaluation node. The output of the second inverter is selectively coupled to the global bit-line evaluation node in response to a control signal, so that when the pass device is active, the local bit line charges or discharges the global bit-line evaluation node without being affected substantially by a state of the output of the second inverter. When the control signal is in the other state, the cross-coupled inverter forms a latch. An internal output control circuit of the second inverter interrupts the feedback provided by the second inverter in response to the control signal.

Abstract translation: 单端输入读出放大器使用通过器件将输入的本地位线耦合到全局位线评估节点。 读出放大器还包括一对交叉耦合的反相器，其第一反相器具有直接耦合到全局位线评估节点的输入端。 响应于控制信号，第二反相器的输出选择性地耦合到全局位线评估节点，使得当通过器件有效时，局部位线对全局位线评估节点充电或放电而不受影响 基本上通过第二反相器的输出的状态。 当控制信号处于另一状态时，交叉耦合的反相器形成锁存器。 第二反相器的内部输出控制电路根据控制信号中断由第二反相器提供的反馈。

公开(公告)号：US09341655B2

公开(公告)日：2016-05-17

申请号：US14501587

申请日：2014-09-30

Applicant: GLOBALFOUNDRIES INC.

Inventor： Paul D. Muench ,  Donald W. Plass ,  Michael A. Sperling

IPC: G11C16/30 ,  H02M3/07 ,  G01R19/00 ,  G05F1/00 ,  G06F1/26 ,  G06F1/30

CPC classification number: G01R19/0023 ,  G05F1/00 ,  G06F1/26 ,  G06F1/30 ,  H02M3/07

Abstract: A method for operating a charge pump that supplies switching current for a plurality of transistors includes a capacitor generating a pumped voltage. A comparator generates a pump control signal for turning on and off charging of the pump capacitor based on a difference between a comparison voltage and a reference voltage. A direct voltage sensor receives a feedback signal reflecting the pumped voltage and generates the comparison voltage in response to the feedback signal. The sensor includes a sensor resistor, a current source configured to drive a sensor current through the sensor resistor, and a differential op-amp that drives the sensor current to cause the voltage drop across the sensor resistor to remain constant as the pumped voltage experiences the voltage drop. The charge pump may include two similar direct voltage sensor controlling positive and negative pumped voltages.

Abstract translation: 用于操作为多个晶体管提供开关电流的电荷泵的操作方法包括产生泵浦电压的电容器。 比较器基于比较电压和参考电压之间的差产生用于打开和关闭泵电容器的充电的泵控制信号。 直接电压传感器接收反映泵浦电压的反馈信号，并响应于反馈信号产生比较电压。 该传感器包括一个传感器电阻器，一个电流源，用于驱动传感器电流通过传感器电阻器;以及差分运算放大器，驱动传感器电流，导致传感器电阻上的电压降保持不变，因为泵浦电压经历 电压下降。 电荷泵可以包括两个相似的直接电压传感器来控制正和负的泵浦电压。