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21 条记录 (耗时 0.025 秒)

    DRIVING AN ELECTRONIC INSTRUMENT
    11.
    发明申请
    DRIVING AN ELECTRONIC INSTRUMENT 有权
    驾驶电子仪器

    公开(公告)号：US20110267030A1

    公开(公告)日：2011-11-03

    申请号：US12769082

    申请日：2010-04-28

    申请人： Steven D. Roach

    发明人： Steven D. Roach

    IPC分类号： G01R27/02 ,  H03K3/00

    CPC分类号： G01R13/32 ,  G01R13/0254

    摘要： Circuitry includes a pre-amplifier having a differential output, where the differential output corresponds to a common mode voltage; a multiplexer including sets of transistors, each of which has a control input; a comparator including input terminals, a first terminal of the input terminals to receive a signal that is based on an output of the multiplexer, and a second terminal of the input terminals to receive a threshold voltage; a compensation circuit to produce a divided voltage that varies in accordance with variations in the common mode voltage; and an amplifier to receive a predefined voltage and to use the divided voltage to affect the predefined voltage to produce the threshold voltage for the comparator. Signals in the differential output of the pre-amplifier are applicable to corresponding control inputs in the sets of transistors.

    摘要翻译： 电路包括具有差分输出的前置放大器，其中差分输出对应于共模电压; 多路复用器，包括晶体管组，每个晶体管具有控制输入; 比较器，包括输入端子，输入端子的第一端子，用于接收基于多路复用器的输出的信号;以及输入端子的第二端子以接收阈值电压; 补偿电路，用于产生根据共模电压的变化而变化的分压; 以及用于接收预定电压并且使用分压的电压影响预定电压以产生比较器的阈值电压的放大器。 前置放大器的差分输出中的信号适用于晶体管组中的相应控制输入。

    Circuitry and methods for current measurements referred to a precision impedance
    12.
    发明授权
    Circuitry and methods for current measurements referred to a precision impedance 有权
    电流测量的电路和方法称为精密阻抗

    公开(公告)号：US07103487B2

    公开(公告)日：2006-09-05

    申请号：US11176553

    申请日：2005-07-06

    申请人： Steven D. Roach

    发明人： Steven D. Roach

    IPC分类号： G01R19/00

    CPC分类号： G01R19/0092 ,  G01R1/203 ,  G01R19/25

    摘要： Circuitry and methods for obtaining accurate measurements of current supplied by an integrated circuit are provided. Current calculations are performed using information from a precision termination resistor and from the ratio relationship of two on-chip resistors. The invention provides a way to obtain accurate current measurements without the use of component trimming.

    摘要翻译： 提供用于获得由集成电路提供的电流的精确测量的电路和方法。 使用来自精密终端电阻的信息和两个片上电阻的比率关系来执行电流计算。 本发明提供了一种在不使用零件修整的情况下获得精确的电流测量的方法。

    Circuits and methods for current measurements referred to a precision impedance
    14.
    发明授权
    Circuits and methods for current measurements referred to a precision impedance 有权
    电流测量的电路和方法称为精密阻抗

    公开(公告)号：US06944556B1

    公开(公告)日：2005-09-13

    申请号：US10015972

    申请日：2001-11-01

    申请人： Steven D. Roach

    发明人： Steven D. Roach

    IPC分类号： G01R19/00 ,  G06F19/00

    CPC分类号： G01R19/0092 ,  G01R1/203 ,  G01R19/25

    摘要： Circuitry and methods for obtaining accurate measurements of current supplied by an integrated circuit are provided. Current calculations are performed using information from a precision termination resistor and from the ratio relationship of two on-chip resistors. The invention provides a way to obtain accurate current measurements without the use of component trimming.

    摘要翻译： 提供用于获得由集成电路提供的电流的精确测量的电路和方法。 使用来自精密终端电阻的信息和两个片上电阻的比率关系来执行电流计算。 本发明提供了一种在不使用零件修整的情况下获得精确的电流测量的方法。

    Attenuator circuit
    15.
    发明授权
    Attenuator circuit 有权
    衰减器电路

    公开(公告)号：US08098181B2

    公开(公告)日：2012-01-17

    申请号：US12769114

    申请日：2010-04-28

    申请人： Steven D. Roach

    发明人： Steven D. Roach

    IPC分类号： H03M1/12 ,  H03G3/00 ,  H03F3/68

    CPC分类号： H03F3/4508 ,  H03F3/45475 ,  H03F2203/45138

    摘要： An attenuator circuit includes a high-frequency circuit path to produce an attenuated first signal; a low-frequency circuit path to produce an attenuated second signal, where the attenuated first signal has a higher frequency than the attenuated second signal; and a transistor that includes a control input. The control input is configured to receive the attenuated second signal to bias the transistor for passage of the attenuated first signal and the attenuated second signal.

    摘要翻译： 衰减器电路包括产生衰减的第一信号的高频电路; 低频电路，产生衰减的第二信号，其中衰减的第一信号具有比衰减的第二信号更高的频率; 以及包括控制输入的晶体管。 控制输入​​被配置为接收衰减的第二信号以偏置晶体管以通过衰减的第一信号和衰减的第二信号。

    Gain normalization for automatic control of lightwave emitters
    17.
    发明授权
    Gain normalization for automatic control of lightwave emitters 有权
    获得光波自动控制的归一化

    公开(公告)号：US06975658B1

    公开(公告)日：2005-12-13

    申请号：US10173452

    申请日：2002-06-13

    申请人： Steven D. Roach

    发明人： Steven D. Roach

    IPC分类号： H01S3/13 ,  H01S5/042 ,  H01S5/068 ,  H01S5/0683

    CPC分类号： H01S5/06832 ,  H01S5/0427 ,  H01S5/06825

    摘要： Circuits and methods for automatically controlling lightwave emitters are provided. A control system is provided that includes a variable gain circuit for automatically adjusting the gain of a control signal with respect to a feedback signal, a modulation signal, and a reference signal. This allows the optical output of the lightwave emitter to remain substantially constant despite changes in transfer ratio due to aging or temperature variations. Furthermore, in some embodiments, a user may select the overall gain of the system to optimize response time, bandwidth, or steady-state accuracy.

    摘要翻译： 提供了自动控制光波发射器的电路和方法。 提供了一种控制系统，其包括用于相对于反馈信号，调制信号和参考信号自动调整控制信号的增益的可变增益电路。 这允许光波发射器的光输出保持基本恒定，尽管由于老化或温度变化而导致的传输比变化。 此外，在一些实施例中，用户可以选择系统的整体增益以优化响应时间，带宽或稳态精度。

    Synthetic circuit component and amplifier applications
    18.
    发明授权
    Synthetic circuit component and amplifier applications 有权
    合成电路元件和放大器应用

    公开(公告)号：US06879215B1

    公开(公告)日：2005-04-12

    申请号：US10144160

    申请日：2002-05-10

    申请人： Steven D. Roach

    发明人： Steven D. Roach

    IPC分类号： H03F1/08 ,  H03F1/14 ,  H03F3/195

    CPC分类号： H03F1/08 ,  H03F1/14 ,  H03F3/195 ,  H03F2200/36

    摘要： Synthetic circuit elements and amplifier applications for synthetic circuit elements are provided. The synthetic circuit elements disclosed herein may be configured to compensate for some or all of the parasitic capacitance normally associated with circuit elements disposed on a substrate providing a selectable impedance characteristic. Amplifier circuit constructed using such synthetic circuit elements exhibit improved performance characteristics such as improved recovery time, frequency response, and time domain response.

    摘要翻译： 提供了用于合成电路元件的合成电路元件和放大器应用。 本文公开的合成电路元件可以被配置为补偿通常与设置在衬底上的电路元件相关联的寄生电容的一些或全部，提供可选择的阻抗特性。 使用这种合成电路元件构成的放大器电路表现出改进的性能特征，例如改进的恢复时间，频率响应和时域响应。

    Ultra-wideband constant gain CMOS amplifier
    19.
    发明授权
    Ultra-wideband constant gain CMOS amplifier 有权
    超宽带恒定增益CMOS放大器

    公开(公告)号：US06670850B1

    公开(公告)日：2003-12-30

    申请号：US10172874

    申请日：2002-06-13

    申请人： Steven D. Roach

    发明人： Steven D. Roach

    IPC分类号： H03F304

    CPC分类号： H03F1/223 ,  H03F1/42 ,  H03F1/565 ,  H03F3/191 ,  H03F3/193 ,  H03F3/45183 ,  H03F3/45188 ,  H03F2200/36 ,  H03F2200/447 ,  H03F2203/45638 ,  H03F2203/45691 ,  H03F2203/45704 ,  H03F2203/45712

    摘要： Circuitry and methods for improved amplifiers with large bandwidth and constant gain-are provided. The combination of a synthetic inductive drain load and a bridged-T matching network provide amplifiers that can drive a substantial capacitive load with the above mentioned improvements over prior amplifiers. Additionally, circuits presented allow for improved rise time and insensitivity to temperature variations.

    摘要翻译： 提供了具有大带宽和恒定增益的改进放大器的电路和方法。 合成感应漏极负载和桥接T匹配网络的组合提供了放大器，可以通过先前的放大器上述改进来驱动大量的容性负载。 此外，所呈现的电路允许改善上升时间和对温度变化的不敏感性。

    Driver circuitry with tuned output impedance
    20.
    发明授权
    Driver circuitry with tuned output impedance 有权
    具有调谐输出阻抗的驱动电路

    公开(公告)号：US06522083B1

    公开(公告)日：2003-02-18

    申请号：US09986256

    申请日：2001-11-08

    申请人： Steven D. Roach

    发明人： Steven D. Roach

    IPC分类号： H05B3700

    CPC分类号： H04L25/0266 ,  H03K19/0005 ,  H04L25/0278 ,  H04L25/028

    摘要： Driver circuitry with a tuned output impedance is provided. Tuning is provided by an isolation circuit and matching network coupled to an output of the driver circuit. The isolation circuit isolates the capacitance associated portions of the driver circuit thereby reducing overall output capacitance. The matching network substantially compensates for reactive impedances associated with other portions of the driver circuit. These tuning circuits allow the driver circuit overcome intrinsic reactance and exhibit a substantially resistive output impedance characteristic.

    摘要翻译： 提供具有调谐输出阻抗的驱动电路。 调谐由耦合到驱动器电路的输出的隔离电路和匹配网络提供。 隔离电路隔离驱动电路的电容相关部分，从而减少总输出电容。 匹配网络基本上补偿与驱动器电路的其他部分相关联的无功阻抗。 这些调谐电路允许驱动电路克服本征电抗并呈现基本上阻值的输出阻抗特性。