Flash converter differential reference ladder adjustment with stable common mode voltage
    1.
    发明授权
    Flash converter differential reference ladder adjustment with stable common mode voltage 失效
    闪光转换器差分参考梯形图调整,具有稳定的共模电压

    公开(公告)号:US07978112B2

    公开(公告)日:2011-07-12

    申请号:US12330224

    申请日:2008-12-08

    IPC分类号: H03M1/12

    摘要: An adjustment circuit for use with a resistive reference ladder that establishes nominal reference steps and a common mode voltage for a plurality of comparators, such as used in a flash converter. An “H” arrangement of current sources injects current at a first node, VH, and sinks at a second node, VL. with VH, and VL. being coupled to ends of the ladder. The voltage difference between these two nodes thus controls the scale applied to the reference ladder, without affecting a common mode voltage reference Vcm. Alternatively, the current source may inject current at VL and sink current at VH to decrease the reference for each comparator.

    摘要翻译: 一种与电阻式参考电梯一起使用的调节电路,其建立用于多个比较器的标称参考步长和共模电压,诸如在闪存转换器中使用的。 电流源的“H”排列在第一节点V H处注入电流,并在第二节点VL处吸收电流。 与VH和VL。 耦合到梯子的端部。 因此,这两个节点之间的电压差控制了施加到参考电梯的电平,而不影响共模电压基准Vcm。 或者,电流源可以在VL处注入电流并在VH处吸收电流以减少每个比较器的参考。

    Flash converter differential reference ladder auto-zero circuit
    2.
    发明授权
    Flash converter differential reference ladder auto-zero circuit 有权
    闪光转换器差分参考梯形自动归零电路

    公开(公告)号:US07760126B2

    公开(公告)日:2010-07-20

    申请号:US12330272

    申请日:2008-12-08

    IPC分类号: H03M1/36

    摘要: A differential reference ladder with an auto zero circuit that can be used as part of a flash analog to digital converter. The auto zero operation is performed relative to a common mode voltage of the ladder. The resistive ladder is disconnected from the rest of the circuit during auto zero mode. As a result, the auto zero adjustment is more accurate, since the offsets are stored under the same common mode connection as when the circuit is in a compare mode. This permits auto zeroing to proceed quickly unencumbered by the parasitic capacitance of the ladder or other components.

    摘要翻译: 具有自动调零电路的差分参考梯形图,可用作闪存模数转换器的一部分。 相对于梯形图的共模电压执行自动归零操作。 在自动归零模式期间,电阻梯与电路的其余部分断开。 因此,自动调零更精确,因为偏移量与电路处于比较模式时的相同共模连接下存储。 这允许自动归零快速地由梯子或其他部件的寄生电容阻碍。

    Methods and apparatus for tuning in an inductive system
    3.
    发明授权
    Methods and apparatus for tuning in an inductive system 有权
    用于在感应系统中调谐的方法和装置

    公开(公告)号:US07035608B2

    公开(公告)日:2006-04-25

    申请号:US10978515

    申请日:2004-11-01

    IPC分类号: H04B1/18 H04B7/00 H04B1/40

    摘要: Electronic circuitry supports utilization of a series of pulses of varying width to tune a transducer (e.g., a coil that produces or receives a magnetic field) for transmitting or receiving. For example, a control voltage generator generates a sequence of digital pulses of varying pulse widths to produce respective control voltages. The control voltage generator applies a produced control voltage to a varactor element whose capacitance changes depending on a magnitude of the produced control voltage. The varactor element forms part of a tank circuit. Consequently, the series of pulse widths controls an operating frequency of the tank circuit at different times. The tank circuit includes an inductive coil that is tuned to produce or receive a magnetic or inductive field.

    摘要翻译: 电子电路支持利用不同宽度的一系列脉冲来调谐传感器(例如,产生或接收磁场的线圈),用于发射或接收。 例如,控制电压发生器产生脉冲宽度变化的数字脉冲序列,以产生相应的控制电压。 控制电压发生器将产生的控制电压施加到变容二极管元件,该变容二极管元件的电容根据所产生的控制电压的大小而变化。 变容二极管元件构成了电路的一部分。 因此,一系列脉冲宽度控制在不同时间的电路的工作频率。 音箱电路包括被调谐以产生或接收磁场或感应场的感应线圈。

    FLASH CONVERTER DIFFERENTIAL REFERENCE LADDER AUTO-ZERO CIRCUIT
    5.
    发明申请
    FLASH CONVERTER DIFFERENTIAL REFERENCE LADDER AUTO-ZERO CIRCUIT 有权
    闪光转换器差分参考电路自动调零电路

    公开(公告)号:US20090153386A1

    公开(公告)日:2009-06-18

    申请号:US12330272

    申请日:2008-12-08

    IPC分类号: H03M1/36

    摘要: A differential reference ladder with an auto zero circuit that can be used as part of a flash analog to digital converter. The auto zero operation is performed relative to a common mode voltage of the ladder. The resistive ladder is disconnected from the rest of the circuit during auto zero mode. As a result, the auto zero adjustment is more accurate, since the offsets are stored under the same common mode connection as when the circuit is in a compare mode. This permits auto zeroing to proceed quickly unencumbered by the parasitic capacitance of the ladder or other components.

    摘要翻译: 具有自动调零电路的差分参考梯形图,可用作闪存模数转换器的一部分。 相对于梯形图的共模电压执行自动归零操作。 在自动归零模式期间,电阻梯与电路的其余部分断开。 因此,自动调零更精确,因为偏移量与电路处于比较模式时的相同共模连接下存储。 这允许自动归零快速地由梯子或其他部件的寄生电容阻碍。

    FLASH CONVERTER DIFFERENTIAL REFERENCE LADDER ADJUSTMENT WITH STABLE COMMON MODE VOLTAGE
    6.
    发明申请
    FLASH CONVERTER DIFFERENTIAL REFERENCE LADDER ADJUSTMENT WITH STABLE COMMON MODE VOLTAGE 失效
    具有稳定的共模电压的闪存转换器差分参考梯形调整

    公开(公告)号:US20090146859A1

    公开(公告)日:2009-06-11

    申请号:US12330224

    申请日:2008-12-08

    IPC分类号: H03M1/36

    摘要: An adjustment circuit for use with a resistive reference ladder that establishes nominal reference steps and a common mode voltage for a plurality of comparators, such as used in a flash converter. An “H” arrangement of current sources injects current at a first node, VH, and sinks at a second node, VL, with VH, and VL, being coupled to ends of the ladder. The voltage difference between these two nodes thus controls the scale applied to the reference ladder, without affecting a common mode voltage reference Vcm. Alternatively, the current source may inject current at VL and sink current at VH to decrease the reference for each comparator.

    摘要翻译: 一种与电阻式参考电梯一起使用的调节电路,其建立用于多个比较器的标称参考步长和共模电压,诸如在闪存转换器中使用的。 电流源的“H”排列在第一节点VH处注入电流,并在第二节点VL处吸收电流,其中VH和VL耦合到梯子的端部。 因此,这两个节点之间的电压差控制了施加到参考电梯的电平,而不影响共模电压基准Vcm。 或者,电流源可以在VL处注入电流并在VH处吸收电流以减少每个比较器的参考。

    Methods and apparatus for tuning in an inductive system
    7.
    发明授权
    Methods and apparatus for tuning in an inductive system 有权
    用于在感应系统中调谐的方法和装置

    公开(公告)号:US07236741B2

    公开(公告)日:2007-06-26

    申请号:US11373456

    申请日:2006-03-10

    摘要: Electronic circuitry supports utilization of a series of pulses of varying width to tune a transducer (e.g., a coil that produces or receives a magnetic field) for transmitting or receiving. For example, a control voltage generator generates a sequence of digital pulses of varying pulse widths to produce respective control voltages. The control voltage generator applies a produced control voltage to a varactor element whose capacitance changes depending on a magnitude of the produced control voltage. The varactor element forms part of a tank circuit. Consequently, the series of pulse widths controls an operating frequency of the tank circuit at different times. The tank circuit includes an inductive coil that is tuned to produce or receive a magnetic or inductive field.

    摘要翻译: 电子电路支持利用不同宽度的一系列脉冲来调谐传感器(例如,产生或接收磁场的线圈),用于发射或接收。 例如,控制电压发生器产生脉冲宽度变化的数字脉冲序列,以产生相应的控制电压。 控制电压发生器将产生的控制电压施加到变容二极管元件,该变容二极管元件的电容根据所产生的控制电压的大小而变化。 变容二极管元件构成了电路的一部分。 因此,一系列脉冲宽度控制在不同时间的电路的工作频率。 音箱电路包括被调谐以产生或接收磁场或感应场的感应线圈。