利索-全球专利检索

  1. Login
  2. Sign Up

Search Results

85 records (took 0.02 seconds)

    Fully Differential Output Swing for Analog Array Based Charge Mode Readout used in a CMOS Image Sensor
    6.
    发明申请
    Fully Differential Output Swing for Analog Array Based Charge Mode Readout used in a CMOS Image Sensor 有权
    用于CMOS图像传感器中的基于模拟阵列的充电模式读出的全差分输出摆幅

    公开(公告)号：US20160099269A1

    公开(公告)日：2016-04-07

    申请号：US14875511

    申请日：2015-10-05

    Applicant: Forza Silicon Corporation

    Inventor： Steven Huang

    IPC: H01L27/146 ,  G11C27/02 ,  H03F3/45

    CPC classification number: G11C27/026 ,  H03F3/45475 ,  H03F2203/45134 ,  H03F2203/45156 ,  H03F2203/45171 ,  H03F2203/45514 ,  H03F2203/45551 ,  H04N5/378

    Abstract: Disclosed herein are novel charge mode readout circuits and associated methods of signal processing. The devices and methods of the invention allow for the improved processing of stored signals by a charge mode readout amplifier, wherein the readout level may be shifted to a desired range and wherein a fully differential output swing may be imparted. The invention advantageously employs a single pair of capacitors to serve the dual roles of modulating amplifier gain and level shifting the output.

    Abstract translation: 这里公开了新颖的充电模式读出电路和相关的信号处理方法。 本发明的装置和方法允许通过充电模式读出放大器对存储的信号的改进处理，其中读出电平可以移动到期望的范围，并且其中可以赋予全差分输出摆幅。 本发明有利地采用单对电容器来实现调制放大器增益和电平移位输出的双重作用。

    Methods and circuits to reduce pop noise in an audio device
    7.
    发明授权
    Methods and circuits to reduce pop noise in an audio device 有权
    减少音频设备弹奏噪音的方法和电路

    公开(公告)号：US09306523B2

    公开(公告)日：2016-04-05

    申请号：US14478531

    申请日：2014-09-05

    Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

    Inventor： Ru Feng Du ,  Qi Yu Liu

    IPC: H04R3/00 ,  H03G3/34

    CPC classification number: H03F1/3205 ,  H03F1/0205 ,  H03F1/305 ,  H03F3/183 ,  H03F3/185 ,  H03F3/187 ,  H03F3/211 ,  H03F3/2171 ,  H03F3/2173 ,  H03F3/45179 ,  H03F2200/03 ,  H03F2200/351 ,  H03F2203/21106 ,  H03F2203/45151 ,  H03F2203/45156 ,  H03G3/345 ,  H03G3/348 ,  H04R3/002

    Abstract: A class D amplifier receives and amplifies a differential analog signal which is then differentially integrated. Two pulse width modulators generate pulse signals corresponding to the differentially integrated analog signal and two power units generate output pulse signals. The outputs the power units are coupled to input terminals of integrators via a resistor feedback network. An analog output unit converts the pulse signals to an output analog signal. The differential integration circuitry implements a soft transition between mute/un-mute. In mute, the integrator output is fixed. During the soft transition, the PWM outputs change slowly from a fixed 50% duty cycle to a final value to ensure that no pop noise is present in the output as a result of mode change.

    Abstract translation: D类放大器接收和放大差分模拟信号，然后差分模拟信号被差分地积分。 两个脉冲宽度调制器产生对应于差分集成模拟信号的脉冲信号，两个功率单元产生输出脉冲信号。 功率单元的输出通过电阻反馈网络耦合到积分器的输入端。 模拟输出单元将脉冲信号转换为输出模拟信号。 差分积分电路实现静音/非静音之间的软转换。 静音时，积分器输出是固定的。 在软转换期间，PWM输出从固定的50％占空比缓慢变化到最终值，以确保由于模式更改而导致输出中没有弹出式噪声。

    CURRENT SENSE CIRCUIT USING A SINGLE OPAMP HAVING DC OFFSET AUTO-ZEROING
    8.
    发明申请
    CURRENT SENSE CIRCUIT USING A SINGLE OPAMP HAVING DC OFFSET AUTO-ZEROING 有权
    使用具有直流偏移自动归零的单个电压的电流检测电路

    公开(公告)号：US20160013765A1

    公开(公告)日：2016-01-14

    申请号：US14329615

    申请日：2014-07-11

    Applicant: QUALCOMM Incorporated

    Inventor： Vincenzo Peluso

    IPC: H03F3/00 ,  H03F3/45

    CPC classification number: H03F3/005 ,  H03F1/303 ,  H03F3/45179 ,  H03F2200/231 ,  H03F2203/45156

    Abstract: A current sense circuit having a single opamp DC offset auto-zero capability that allows for continuous current sensing operation while at the same time providing for DC offset sensing and compensation. The single opamp design can operate in a first phase to sense and store a DC offset, while providing an output to drive an output stage of the current sense circuit. The single opamp design can operate in a second phase, using the sensed DC offset to generate an accurate output that can drive the output stage and which can be used in the first phase.

    Abstract translation: 具有单个运算放大器DC偏移自动调零功能的电流检测电路，允许连续电流检测操作，同时提供DC偏移检测和补偿。 单个运算放大器设计可以在第一阶段中操作以感测和存储DC偏移，同时提供输出来驱动电流感测电路的输出级。 单个运算放大器设计可以在第二阶段中工作，使用感测的直流偏移来产生可驱动输出级并可在第一阶段使用的精确输出。

    Ultra low-frequency response, DC-blocked low-noise amplifier
    10.
    发明授权
    Ultra low-frequency response, DC-blocked low-noise amplifier 有权
    超低频响应，直流阻塞低噪声放大器

    公开(公告)号：US07317356B2

    公开(公告)日：2008-01-08

    申请号：US11173507

    申请日：2005-07-01

    Applicant: Ravi S. Ananth

    Inventor： Ravi S. Ananth

    IPC: H03F3/45

    CPC classification number: H03F3/187 ,  H03F1/26 ,  H03F1/38 ,  H03F3/005 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45968 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45156 ,  H03F2203/45296 ,  H03F2203/45332 ,  H03F2203/45512 ,  H03F2203/45544 ,  H03F2203/45546 ,  H03F2203/45631 ,  H03F2203/45632 ,  H03F2203/45686

    Abstract: An amplifier circuit is disclosed that allows for practical integrated circuit implementation of a dc-blocked, low-noise differential amplifier capable of amplifying ultra low-frequency signals and amplitudes ranging upwards of a few microvolts. DC-blocking capacitors having a capacitance value close to that of the effective input capacitance of the low-noise amplifier's inputs can be used by incorporating a positive feedback mechanism that tracks any variations in the amplifier gain or integrated circuit's technology process and lowers or cancels the input parasitic capacitances. Advantageously, the parasitic capacitance of transistors, typically field effect transistors, located on an integrated circuit chip are used in the feedback mechanism. This reduces the capacitive voltage division loss of the signal at the input of the amplifier while still allowing for the use of very small values of dc-blocking capacitance. No other active elements other than the amplifier itself are required to attain a low area, integrated circuit implementation of a dc-blocked, yet ultra low-frequency high pass filtered, low-noise amplifier.

    Abstract translation: 公开了一种放大器电路，其允许实现一种直流阻塞的低噪声差分放大器的实际集成电路，该差分放大器能够放大超过几微伏范围的超低频信号和幅度。 具有接近低噪声放大器输入的有效输入电容的电容值的隔直电容器可以通过结合一个正反馈机制来使用，该正反馈机制跟踪放大器增益或集成电路技术过程中的任何变化，并降低或取消 输入寄生电容。 有利地，在反馈机制中使用位于集成电路芯片上的晶体管（通常为场效应晶体管）的寄生电容。 这降低了放大器输入端的信号的电容分压损耗，同时仍然允许使用非常小的直流阻塞电容值。 除了放大器本身之外，不需要其他有源元件来实现直流阻塞但是超低频高通滤波的低噪声放大器的低面积集成电路实现。

Patent Agency Ranking