Distortion limiter and automatic power control for drivers
    1.
    发明授权
    Distortion limiter and automatic power control for drivers 有权
    扭矩限制器和驱动程序的自动功率控制

    公开(公告)号:US09124227B2

    公开(公告)日:2015-09-01

    申请号:US13622170

    申请日:2012-09-18

    摘要: Systems and methods are disclosed to provide automatic power control for a driver circuit. Embodiments disclosed herein enable a driver circuit to automatically decrease the gain of amplified input signals when output power exceeds a threshold. Further, embodiments disclosed herein enable a driver circuit to automatically increase the gain of amplified input signals when battery supply voltage drops to avoid unwanted output signal distortion. By using reference signals for battery power and amplified signal input, the amplifiers of the driver circuit can be automatically adjusted until an equilibrium is reached.

    摘要翻译: 公开了系统和方法来为驱动器电路提供自动功率控制。 当输出功率超过阈值时,本文公开的实施例使得驱动器电路能够自动降低放大的输入信号的增益。 此外,本文公开的实施例使得当电池电源电压下降时,驱动器电路自动地增加放大的输入信号的增益,以避免不期望的输出信号失真。 通过使用电池电源和放大信号输入的参考信号,可以自动调节驱动电路的放大器,直到达到平衡。

    Distortion Limiter and Automatic Power Control for Drivers
    2.
    发明申请
    Distortion Limiter and Automatic Power Control for Drivers 有权
    扭矩限制器和驱动器的自动功率控制

    公开(公告)号:US20140079246A1

    公开(公告)日:2014-03-20

    申请号:US13622170

    申请日:2012-09-18

    摘要: Systems and methods are disclosed to provide automatic power control for a driver circuit. Embodiments disclosed herein enable a driver circuit to automatically decrease the gain of amplified input signals when output power exceeds a threshold. Further, embodiments disclosed herein enable a driver circuit to automatically increase the gain of amplified input signals when battery supply voltage drops to avoid unwanted output signal distortion. By using reference signals for battery power and amplified signal input, the amplifiers of the driver circuit can be automatically adjusted until an equilibrium is reached.

    摘要翻译: 公开了系统和方法来为驱动器电路提供自动功率控制。 当输出功率超过阈值时,本文公开的实施例使得驱动器电路能够自动降低放大的输入信号的增益。 此外,本文公开的实施例使得当电池电源电压下降时,驱动器电路自动地增加放大的输入信号的增益,以避免不期望的输出信号失真。 通过使用电池电源和放大信号输入的参考信号,可以自动调节驱动电路的放大器,直到达到平衡。

    Integrated Upstream Amplifier for Cable Modem and Cable Set-Top Boxes
    3.
    发明申请
    Integrated Upstream Amplifier for Cable Modem and Cable Set-Top Boxes 有权
    用于电缆调制解调器和电缆机顶盒的集成上行放大器

    公开(公告)号:US20120086592A1

    公开(公告)日:2012-04-12

    申请号:US13226233

    申请日:2011-09-06

    IPC分类号: H03M1/66

    CPC分类号: H03G3/001 H03G1/0088

    摘要: An upstream amplifier is integrated on a substrate with a digital-to-analog converter (DAC) to form an integrated circuit. In an embodiment, a low-pass filter is also integrated on the substrate. The output signal level of the upstream amplifier is controllable. In embodiments, fine adjustments are made to the output signal level of the upstream amplifier by varying a bias current of the DAC. A software control bit is used to switch between a power-on mode of operation and a power-down mode of operation. The upstream amplifier transmits in a burst mode. The power consumption of the upstream amplifier scales with the amplifier's output signal level. A high degree of matching is attained between the positive and negative paths of the upstream amplifier. This provides high immunity from common-mode disturbances such as substrate noise, clock spurs, and glitches caused by a gain change.

    摘要翻译: 上游放大器集成在具有数模转换器(DAC)的基板上,以形成集成电路。 在一个实施例中,低通滤波器也集成在基板上。 上游放大器的输出信号电平是可控的。 在实施例中,通过改变DAC的偏置电流对上游放大器的输出信号电平进行微调。 软件控制位用于在上电操作模式和掉电操作模式之间切换。 上游放大器以突发模式发送。 上游放大器的功耗随放大器的输出信号电平而变化。 在上游放大器的正和负路径之间达到高度的匹配。 这提供了诸如衬底噪声,时钟刺激和由增益变化引起的毛刺等共模干扰的高抗扰性。

    Integrated upstream amplifier for cable modems and cable set-top boxes
    4.
    发明授权
    Integrated upstream amplifier for cable modems and cable set-top boxes 有权
    用于电缆调制解调器和有线机顶盒的集成上游放大器

    公开(公告)号:US08013768B2

    公开(公告)日:2011-09-06

    申请号:US10163313

    申请日:2002-06-07

    IPC分类号: H03M1/66

    CPC分类号: H03G3/001 H03G1/0088

    摘要: An upstream amplifier is integrated on a substrate with a digital-to-analog converter (DAC) to form an integrated circuit. In an embodiment, a low-pass filter is also integrated on the substrate. The output signal level of the upstream amplifier is controllable. In embodiments, fine adjustments are made to the output signal level of the upstream amplifier by varying a bias current of the DAC. A software control bit is used to switch between a power-on mode of operation and a power-down mode of operation. The upstream amplifier transmits in a burst mode. The power consumption of the upstream amplifier scales with the amplifier's output signal level. A high degree of matching is attained between the positive and negative paths of the upstream amplifier. This provides high immunity from common-mode disturbances such as substrate noise, clock spurs, and glitches caused by a gain change.

    摘要翻译: 上游放大器集成在具有数模转换器(DAC)的基板上,以形成集成电路。 在一个实施例中,低通滤波器也集成在基板上。 上游放大器的输出信号电平是可控的。 在实施例中,通过改变DAC的偏置电流对上游放大器的输出信号电平进行微调。 软件控制位用于在上电操作模式和掉电操作模式之间切换。 上游放大器以突发模式发送。 上游放大器的功耗随放大器的输出信号电平而变化。 在上游放大器的正和负路径之间达到高度的匹配。 这提供了诸如衬底噪声,时钟刺激和由增益变化引起的毛刺等共模干扰的高抗扰性。

    Bias-independent capacitor based on superposition of nonlinear capacitors for analog/RF circuit applications
    5.
    发明授权
    Bias-independent capacitor based on superposition of nonlinear capacitors for analog/RF circuit applications 失效
    基于模拟/射频电路应用的非线性电容叠加的偏置电容器

    公开(公告)号:US07135730B2

    公开(公告)日:2006-11-14

    申请号:US10759076

    申请日:2004-01-20

    CPC分类号: H01L29/78

    摘要: A first MOS-on-NWELL device is formed on a substrate and has its pickup terminals optionally connected together. A second MOS-on-NWELL device is formed on the substrate and has its pickup terminals optionally connected together. A gate of the first MOS-on-NWELL device is connected to the pickup terminals of the second MOS-on-NWELL device. A gate of the second MOS-on-NWELL device is connected to the pickup terminals of the first MOS-on-NWELL device. A first PMOS transistor is formed on a substrate and has its source and drain terminals connected together. A second PMOS transistor is formed on a substrate and has its source and drain terminals connected together. A gate of the first PMOS transistor is connected to the source and drain terminals of the second PMOS transistor. A gate of the second PMOS transistor is connected to the source and drain terminals of the first PMOS transistor. A combination of the first and second PMOS transistors are connected in parallel with the first and second MOS-on-NWELL devices.

    摘要翻译: 第一MOS-on-NWELL器件形成在衬底上并且其拾取端子可选地连接在一起。 第二个MOS-on-NWELL器件形成在衬底上,并且其拾取端可选地连接在一起。 第一MOS-on-NWELL装置的栅极连接到第二MOS-on-NWELL装置的拾取端。 第二MOS-on-NWELL装置的栅极连接到第一MOS-on-NWELL装置的拾取端。 第一PMOS晶体管形成在衬底上并且其源极和漏极端子连接在一起。 第二PMOS晶体管形成在衬底上并且其源极和漏极端子连接在一起。 第一PMOS晶体管的栅极连接到第二PMOS晶体管的源极和漏极端子。 第二PMOS晶体管的栅极连接到第一PMOS晶体管的源极和漏极端子。 第一和第二PMOS晶体管的组合与第一和第二MOS-on-NWELL器件并联连接。

    Linear low noise transconductance cell
    6.
    发明授权
    Linear low noise transconductance cell 失效
    线性低噪声跨导电池

    公开(公告)号:US07002405B2

    公开(公告)日:2006-02-21

    申请号:US10777629

    申请日:2004-02-13

    IPC分类号: G05G7/12 G05G7/26

    摘要: A low noise transconductance cell includes a resistor and a differential circuit pair having two equivalent half-circuits. Each half-circuit includes a feedback loop coupled to the resistor. The feedback loop includes an input transistor coupled to an inverting gain stage. The inverting gain stage is coupled to an output transistor which in turn is coupled to the input transistor and the resistor. In a low noise transconductance cell, a bias current source is coupled to the center of series connected resistors. In a high swing transconductance cell, a first bias current source is coupled to the left terminal of a resistance stage and a second bias current source is coupled to the right terminal of the resistance stage. The resistance stage can include a single resistor or a plurality of resistors.

    摘要翻译: 低噪声跨导单元包括具有两个等效半电路的电阻器和差分电路对。 每个半电路包括耦合到电阻器的反馈回路。 反馈回路包括耦合到反相增益级的输入晶体管。 反相增益级耦合到输出晶体管,输出晶体管又连接到输入晶体管和电阻器。 在低噪声跨导电池中,偏置电流源耦合到串联电阻的中心。 在高摆幅跨导单元中,第一偏置电流源耦合到电阻级的左端,第二偏置电流源耦合到电阻级的右端。 电阻级可以包括单个电阻器或多个电阻器。

    Apparatus, system, and method for amplifying a signal, and applications thereof
    7.
    发明授权
    Apparatus, system, and method for amplifying a signal, and applications thereof 有权
    用于放大信号的装置,系统和方法及其应用

    公开(公告)号:US06747510B2

    公开(公告)日:2004-06-08

    申请号:US10163143

    申请日:2002-06-07

    IPC分类号: H03F152

    CPC分类号: H03G3/001 H03G1/0088

    摘要: An upstream amplifier is integrated on a substrate with a digital-to-analog converter (DAC) to form an integrated circuit. In an embodiment, a low-pass filter is also integrated on the substrate. The output signal level of the upstream amplifier is controllable. In embodiments, fine adjustments are made to the output signal level of the upstream amplifier by varying a bias current of the DAC. A software control bit is used to switch between a power-on mode of operation and a power-down mode of operation. The upstream amplifier transmits in a burst mode. The power consumption of the upstream amplifier scales with the amplifier's output signal level. A high degree of matching is attained between the positive and negative paths of the upstream amplifier. This provides high immunity from common-mode disturbances such as substrate noise, clock spurs, and glitches caused by a gain change.

    摘要翻译: 上游放大器集成在具有数模转换器(DAC)的基板上,以形成集成电路。 在一个实施例中,低通滤波器也集成在基板上。 上游放大器的输出信号电平是可控的。 在实施例中,通过改变DAC的偏置电流对上游放大器的输出信号电平进行微调。 软件控制位用于在上电操作模式和掉电操作模式之间切换。 上游放大器以突发模式发送。 上游放大器的功耗随放大器的输出信号电平而变化。 在上游放大器的正和负路径之间达到高度的匹配。 这提供了诸如衬底噪声,时钟刺激和由增益变化引起的毛刺等共模干扰的高抗扰性。

    Low frequency noise reduction circuit architecture for communications applications
    9.
    发明授权
    Low frequency noise reduction circuit architecture for communications applications 有权
    用于通信应用的低频降噪电路架构

    公开(公告)号:US08705752B2

    公开(公告)日:2014-04-22

    申请号:US11523693

    申请日:2006-09-20

    IPC分类号: H04R5/00

    CPC分类号: H04R3/04

    摘要: A noise reduction circuit for reducing the effects of low frequency noise such as wind noise in communications applications is described. In one embodiment, the noise reduction circuit features a high pass filter formed by exploiting the existing off-chip AC coupling capacitances in making the connection to the source of audio signals. The filter may be adaptive to environmental low frequency noise level through programming the shunt resistances. A low-noise wide dynamic range programmable gain amplifier is also described. Adaptive equalization of the audio signal is also described through the utilization of programmable front-end resistors and a back-end audio equalizer.

    摘要翻译: 描述了用于降低通信应用中诸如风噪声的低频噪声的影响的降噪电路。 在一个实施例中,噪声降低电路具有通过利用现有的片外AC耦合电容在形成与音频信号源的连接而形成的高通滤波器。 滤波器可以通过编程分流电阻来适应环境低频噪声电平。 还描述了低噪声宽动态范围可编程增益放大器。 还通过利用可编程前端电阻和后端音频均衡器来描述音频信号的自适应均衡。

    Thick oxide P-gate NMOS capacitor for use in a low-pass filter of a circuit and method of making same
    10.
    发明授权
    Thick oxide P-gate NMOS capacitor for use in a low-pass filter of a circuit and method of making same 有权
    用于电路的低通滤波器的厚氧化物P栅极NMOS电容器及其制造方法

    公开(公告)号:US07547956B2

    公开(公告)日:2009-06-16

    申请号:US10975090

    申请日:2004-10-28

    IPC分类号: H01L23/58

    摘要: A circuit with dielectric thicknesses is presented that includes a low-pass filter including one or more semiconductor devices having a thick gate oxide layer, while further semiconductor devices of the circuit have thin gate oxide layers. The low-pass filter semiconductor device includes an N-type substrate, a P-type region formed on the N-type substrate, a thick gate oxide layer formed over the P-type region, a P+ gate electrode formed over the thick gate oxide layer and coupled to a first voltage supply line, and P+ pick-up terminals formed in the P-type region adjacent the gate electrode and coupled to a second voltage supply line. The low-pass filter semiconductor device acts as a capacitor, whereby a gate-to-substrate voltage is maintained at less than zero volts to maintain a stable control voltage for the circuit.

    摘要翻译: 提出了具有介电厚度的电路,其包括包括具有厚栅极氧化物层的一个或多个半导体器件的低通滤波器,而该电路的另外的半导体器件具有薄的栅极氧化物层。 低通滤波器半导体器件包括N型衬底,形成在N型衬底上的P型区,在P型区上形成的厚栅氧化层,形成在厚栅极氧化物上的P +栅电极 并且耦合到第一电压供应线,以及P +拾取端子,其形成在与栅电极相邻的P型区域中并且耦合到第二电压供应线。 低通滤波器半导体器件用作电容器,由此栅极至衬底的电压保持在小于零伏特以保持电路的稳定的控制电压。