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公开(公告)号：US20120001649A1
公开(公告)日：2012-01-05
申请号：US12827455
申请日：2010-06-30
IPC分类号： G01R27/08
CPC分类号： G01R1/203 , H01L2224/48247 , H01L2224/49171 , H01L2924/3011 , H01L2924/00
摘要： A current sensor is disclosed. The current sensor includes a leadframe having a die paddle, a portion of the die paddle being configured as a resistive element through which current can flow, and an integrated circuit (IC) die attached and thermally coupled to the die paddle. The IC die includes a current sensing module configured to measure a voltage drop across the resistive element and convert the voltage drop measurement to a current measurement signal and a temperature compensation module electrically coupled to the current sensing module. The temperature compensation module is configured to adjust the current measurement signal to compensate for temperature-dependent changes in the resistive element. The temperature compensation module includes a temperature-sensitive element, with a portion of the temperature-sensitive element located directly over a portion of the resistive element.
摘要翻译： 公开了一种电流传感器。 电流传感器包括具有管芯焊盘的引线框架，管芯焊盘的一部分被配置为电流可以流过的电阻元件，以及附接并热耦合到管芯焊盘的集成电路（IC）管芯。 IC芯片包括电流感测模块，其被配置为测量电阻元件两端的电压降，并将电压降测量转换为电流测量信号，以及电耦合到电流感测模块的温度补偿模块。 温度补偿模块被配置为调整电流测量信号以补偿电阻元件中与温度有关的变化。 温度补偿模块包括温度敏感元件，其中一部分温度敏感元件位于电阻元件的一部分的正上方。
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2.发明授权Voltage-mode band-gap reference circuit with temperature drift and output voltage trims 有权具有温度漂移和输出电压调整的电压模式带隙参考电路公开(公告)号：US08791683B1
公开(公告)日：2014-07-29
申请号：US13037090
申请日：2011-02-28
CPC分类号： G05F3/30
摘要： A monolithic voltage reference circuit may include a voltage-mode band-gap reference circuit, a temperature independent differential current source, and a temperature dependent differential current source. The voltage-mode band-gap reference circuit may include an error amplifier having differential input nodes. The temperature independent differential current source may be configured to add in or subtract from the differential input nodes a substantially temperature independent differential current with an allocation between the nodes that is controlled by a selectable output voltage trim setting. The temperature dependent differential current source may be configured to add in or subtract from the differential input nodes a substantially temperature dependent differential current with an allocation between the nodes that is controlled by a selectable temperature drift trim setting.
摘要翻译： 单片电压参考电路可以包括电压模式带隙参考电路，温度无关的差分电流源和与温度相关的差分电流源。 电压模式带隙参考电路可以包括具有差分输入节点的误差放大器。 温度无关差动电流源可以被配置为在差分输入节点中加入或减去基本上与温度无关的差分电流，并且通过由可选择的输出电压调整设置来控制的节点之间的分配。 温度相关差分电流源可以被配置为通过由可选择的温度漂移修整设置来控制的节点之间的分配，在差分输入节点中加入或减去基本上温度相关的差分电流。
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公开(公告)号：US08446159B2
公开(公告)日：2013-05-21
申请号：US12827455
申请日：2010-06-30
CPC分类号： G01R1/203 , H01L2224/48247 , H01L2224/49171 , H01L2924/3011 , H01L2924/00
摘要： A current sensor is disclosed. The current sensor includes a leadframe having a die paddle, a portion of the die paddle being configured as a resistive element through which current can flow, and an integrated circuit (IC) die attached and thermally coupled to the die paddle. The IC die includes a current sensing module configured to measure a voltage drop across the resistive element and convert the voltage drop measurement to a current measurement signal and a temperature compensation module electrically coupled to the current sensing module. The temperature compensation module is configured to adjust the current measurement signal to compensate for temperature-dependent changes in the resistive element. The temperature compensation module includes a temperature-sensitive element, with a portion of the temperature-sensitive element located directly over a portion of the resistive element.
摘要翻译： 公开了一种电流传感器。 电流传感器包括具有管芯焊盘的引线框架，管芯焊盘的一部分被配置为电流可以流过的电阻元件，以及附接并热耦合到管芯焊盘的集成电路（IC）管芯。 IC芯片包括电流感测模块，其被配置为测量电阻元件两端的电压降，并将电压降测量转换为电流测量信号，以及电耦合到电流感测模块的温度补偿模块。 温度补偿模块被配置为调整电流测量信号以补偿电阻元件中与温度有关的变化。 温度补偿模块包括温度敏感元件，其中一部分温度敏感元件位于电阻元件的一部分的正上方。
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公开(公告)号：US08648623B2
公开(公告)日：2014-02-11
申请号：US13448161
申请日：2012-04-16
IPC分类号： G01R19/00
CPC分类号： G01R19/0092 , G01R1/203 , H03F1/26 , H03F3/393 , H03F3/45179 , H03F3/45632 , H03F2200/261 , H03F2200/462 , H03F2200/481 , H03F2203/45548
摘要： A single stage current sense amplifier is described that generates a differential output that is proportional to a current through a sense resistor. The voltage across the sense resistor is Vsense. The current sense amplifier includes a differential transconductance amplifier having high impedance input terminals. An on-chip RC filter filters transients in the Vsense signal. A feedback circuit for each leg of the amplifier causes a pair of input transistors to conduct a fixed constant current irrespective of Vsense, which stabilizes the transconductance. A gain control resistor (Re) is coupled across terminals of the pair of input transistors and has Vsense across it. The current through the gain control resistor is therefore Vsensex1/Re. A level shifting circuit coupled to each of the input transistors lowers a common mode voltage at an output of the amplifier. Chopper circuits at the input and output cancel any offset voltages.
摘要翻译： 描述了单级电流检测放大器，其产生与通过检测电阻器的电流成比例的差分输出。 检测电阻两端的电压为Vsense。 电流检测放大器包括具有高阻抗输入端的差分跨导放大器。 片内RC滤波器对Vsense信号中的瞬变进行滤波。 放大器的每个支路的反馈电路使得一对输入晶体管能够导通固定的恒定电流，而与Vsense无关，这稳定跨导。 增益控制电阻（Re）耦合在该对输入晶体管的端子之间，并且在其上具有Vsense。 因此，通过增益控制电阻的电流为Vsensex1 / Re。 耦合到每个输入晶体管的电平移动电路在放大器的输出处降低共模电压。 输入和输出的斩波电路可以消除任何偏移电压。
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公开(公告)号：US20130271216A1
公开(公告)日：2013-10-17
申请号：US13448161
申请日：2012-04-16
IPC分类号： H03F3/45
CPC分类号： G01R19/0092 , G01R1/203 , H03F1/26 , H03F3/393 , H03F3/45179 , H03F3/45632 , H03F2200/261 , H03F2200/462 , H03F2200/481 , H03F2203/45548
摘要： A single stage current sense amplifier is described that generates a differential output that is proportional to a current through a sense resistor. The voltage across the sense resistor is Vsense. The current sense amplifier includes a differential transconductance amplifier having high impedance input terminals. An on-chip RC filter filters transients in the Vsense signal. A feedback circuit for each leg of the amplifier causes a pair of input transistors to conduct a fixed constant current irrespective of Vsense, which stabilizes the transconductance. A gain control resistor (Re) is coupled across terminals of the pair of input transistors and has Vsense across it. The current through the gain control resistor is therefore Vsensex1/Re. A level shifting circuit coupled to each of the input transistors lowers a common mode voltage at an output of the amplifier. Chopper circuits at the input and output cancel any offset voltages.
摘要翻译： 描述了单级电流检测放大器，其产生与通过检测电阻器的电流成比例的差分输出。 检测电阻两端的电压为Vsense。 电流检测放大器包括具有高阻抗输入端的差分跨导放大器。 片内RC滤波器对Vsense信号中的瞬变进行滤波。 放大器的每个支路的反馈电路使得一对输入晶体管能够导通固定的恒定电流，而与Vsense无关，这稳定跨导。 增益控制电阻（Re）耦合在该对输入晶体管的端子之间，并且在其上具有Vsense。 因此，通过增益控制电阻的电流为Vsensex1 / Re。 耦合到每个输入晶体管的电平移动电路在放大器的输出处降低共模电压。 输入和输出的斩波电路可以消除任何偏移电压。
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6.发明授权Method and circuit for improving lock-time performance for a phase-locked loop 有权用于提高锁相环的锁定时间性能的方法和电路公开(公告)号：US06624707B1
公开(公告)日：2003-09-23
申请号：US09753179
申请日：2001-01-02
IPC分类号： H03L7085
CPC分类号： H03L7/0898 , H03L7/093
摘要： A gain control for a phase locked loop circuit is provided. In the phase-locked loop circuit, a voltage controlled oscillator generates a reference signal responsive to the level of a tuning voltage. A phase detector generates the tuning voltage update, which is indicative of a phase relationship between the reference signal and an input signal. A feedback circuit detects the tuning voltage and generates an adjustment signal in response. The adjustment signal is then used to adjust the loop gain at any specific tuning voltage. In a specific example, the adjustment signal is used to adjust the current gain of the phase detector in a manner that is complementary to the non-linear voltage gain of the voltage-controlled oscillator.
摘要翻译： 提供了锁相环电路的增益控制。 在锁相环电路中，压控振荡器响应于调谐电压的电平产生参考信号。 相位检测器产生调谐电压更新，其指示参考信号和输入信号之间的相位关系。 反馈电路检测调谐电压并产生响应的调整信号。 然后调整信号用于调整任何特定调谐电压下的环路增益。 在具体示例中，调整信号用于以与压控振荡器的非线性电压增益互补的方式调整相位检测器的电流增益。
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