Programmable linearity correction circuit for digital-to-analog converter
    1.
    发明授权
    Programmable linearity correction circuit for digital-to-analog converter 有权
    用于数模转换器的可编程线性校正电路

    公开(公告)号:US08514112B2

    公开(公告)日:2013-08-20

    申请号:US13168017

    申请日:2011-06-24

    CPC classification number: H03M1/0621 H03M1/1047 H03M1/804 H03M1/808

    Abstract: The invention provides a systematic error correction network coupled to a converter. The converter may display a systematic non-linearity error, and the systematic error correction network shapes a correction transform function that acts like counter distortion function for the non-linearity error. The systematic error correction network then scales the correction transform function according to a reference variable, where the magnitude of non-linearity error is related to the reference variable. The scaled correction transform function is then applied to the converter path in order to generate a corrected analog output signal.

    Abstract translation: 本发明提供耦合到转换器的系统误差校正网络。 转换器可能会显示系统的非线性误差,并且系统误差校正网络对于非线性误差,形成像反失真函数一样的校正变换函数。 然后,系统误差校正网络根据参考变量对校正变换函数进行缩放,其中非线性误差的大小与参考变量相关。 然后将缩放的校正变换函数应用于转换器路径,以便产生校正的模拟输出信号。

    Opportunistic Timing Control in Mixed-Signal System-On-Chip Designs
    2.
    发明申请
    Opportunistic Timing Control in Mixed-Signal System-On-Chip Designs 有权
    混合信号系统芯片设计中的机会时序控制

    公开(公告)号:US20110043251A1

    公开(公告)日:2011-02-24

    申请号:US12630999

    申请日:2009-12-04

    CPC classification number: H03M1/0818 H03M1/1225

    Abstract: An integrated circuit may include a plurality of circuit sub-systems that include at least one converter circuit operating in respective critical phases and non-critical phases of operation, a clock distribution circuit that has an input for an externally-supplied clock signal that is active during the non-critical phases and inactive during the critical phases, and a clock generator to generate an internal clock signal to the converter circuit that is active when the external-supplied clock signal is inactive.

    Abstract translation: 集成电路可以包括多个电路子系统,其包括在相应的临界相位和非临界相位操作中操作的至少一个转换器电路,具有用于外部提供的时钟信号的输入的时钟分配电路是有效的 在非临界阶段期间在关键阶段期间不起作用,以及时钟发生器,用于在外部提供的时钟信号无效时,向转换器电路产生内部时钟信号,该转换器电路有效。

    Reset and resettable circuits
    3.
    发明授权
    Reset and resettable circuits 有权
    复位和复位电路

    公开(公告)号:US08514014B2

    公开(公告)日:2013-08-20

    申请号:US13023751

    申请日:2011-02-09

    CPC classification number: H03F1/34 H03F3/45475 H03F3/68 H03F2203/45514

    Abstract: An amplifier system can include a feedback amplifier circuit having an amplifier, a feedback capacitor connected between an input terminal and an output terminal of the amplifier by at least one first switch, and a reset capacitor connected across the feedback capacitor by at least one second switch and between a pair of reference voltages by at least one third switch. During an input-signal processing phase of operation, a control circuit may close the at least one first switch and open the at least one second switch to electrically connect the feedback capacitor between the input and output terminals to engage feedback processing by the feedback amplifier circuit, and close the third switch to electrically connect the reset capacitor between the first and second voltages to charge the reset capacitor to a selectable voltage difference. During a reset phase of operation, the control circuit may open the at least one third switch, close the at least one second switch and open the at least one first switch to electrically connect the reset capacitor across the feedback capacitor to reset the feedback capacitor using the reset capacitor. The amplifier system can optionally include a plurality of the feedback amplifier circuits.

    Abstract translation: 放大器系统可以包括具有放大器的反馈放大器电路,通过至少一个第一开关连接在放大器的输入端子和输出端子之间的反馈电容器以及通过至少一个第二开关连接在反馈电容器上的复位电容器 以及通过至少一个第三开关在一对参考电压之间。 在操作的输入信号处理阶段期间,控制电路可以关闭所述至少一个第一开关并且打开所述至少一个第二开关以将所述反馈电容器电连接在所述输入和输出端子之间,以接收所述反馈放大器电路的反馈处理 并且关闭第三开关以在第一和第二电压之间电连接复位电容器,以将复位电容器充电至可选择的电压差。 在复位操作阶段期间,控制电路可以打开至少一个第三开关,闭合至少一个第二开关并且打开至少一个第一开关,以使反复电容器上的复位电容器电连接以使反馈电容器复位,以使用 复位电容。 放大器系统可以可选地包括多个反馈放大器电路。

    Asynchronous digital sample rate converter
    4.
    发明授权
    Asynchronous digital sample rate converter 失效
    异步数字采样率转换器

    公开(公告)号:US5666299A

    公开(公告)日:1997-09-09

    申请号:US446036

    申请日:1995-05-19

    CPC classification number: H03H17/0628

    Abstract: An asynchronous digital sample rate converter includes a random access memory for storing input data values and a read only memory for storing a reduced set of interpolation filter coefficients. Input data is written to the random access memory at the input sample rate. Output samples are provided from a multiply/accumulate engine which given a stream of input data and filter coefficients produces an output sample upon request at the output frequency. The initial address for reading input data from the random access memory, and the addresses for coefficients from the read only memory are provided by an auto-centering scheme which is a first order closed loop system with a digital integrator fed by an approximation of the input to output sample rate ratio. This auto-centering scheme may include a feed forward low pass filter to cancel steady state error, and an interpolated write address to reduce noise. A circuit determining the output to input sample rate ratios can also be provided to scale coefficient addresses and resulting output samples to allow for decimation. This circuit includes a form of digital hysteresis to eliminate noise. The ROM coefficients are reduced by relying on the symmetry of the impulse response of the interpolation filter and by utilizing a variable step size forward and backward linear interpolation.

    Abstract translation: 异步数字采样率转换器包括用于存储输入数据值的随机存取存储器和用于存储缩减的一组内插滤波器系数的只读存储器。 输入数据以输入采样率写入随机存取存储器。 输出样本由给定输入数据流的乘法/累加引擎提供,滤波器系数根据请求在输出频率下产生输出采样。 用于从随机存取存储器读取输入数据的初始地址和来自只读存储器的系数的地址由自动定心方案提供,该自动定心方案是具有通过输入的近似馈送的数字积分器的一阶闭环系统 输出采样率。 这种自动对中方案可以包括用于消除稳态误差的前馈低通滤波器和内插写入地址以减少噪声。 还可以提供确定输入到输入采样速率比的电路,以缩放系数地址和产生的输出采样以允许抽取。 该电路包括一种消除噪声的数字滞后形式。 通过依赖于内插滤波器的脉冲响应的对称性以及利用可变步长前后线性插值来减小ROM系数。

    Interpolation filter with reduced set of filter coefficients
    5.
    发明授权
    Interpolation filter with reduced set of filter coefficients 失效
    内插滤波器,滤波器系数减少

    公开(公告)号:US5471411A

    公开(公告)日:1995-11-28

    申请号:US234177

    申请日:1994-04-28

    CPC classification number: H03H17/0628

    Abstract: An asynchronous digital sample rate converter includes a random access memory for storing input data values and a read only memory for storing a reduced set of interpolation filter coefficients. Input data is written to the random access memory at the input sample rate. Output samples are provided from a multiply/accumulate engine which given a stream of input data and filter coefficients produces an output sample upon request at the output frequency. The initial address for reading input data from the random access memory, and the addresses for coefficients from the read only memory are provided by an auto-centering scheme which is a first order closed loop system with a digital integrator fed by an approximation of the input to output sample rate ratio. This auto-centering scheme may include a feed forward low pass filter to cancel steady state error, and an interpolated write address to reduce noise. A circuit determining the output to input sample rate ratios can also be provided to scale coefficient addresses and resulting output samples to allow for decimation. This circuit includes a form of digital hysteresis to eliminate noise. The ROM coefficients are reduced by relying on the symmetry of the impulse response of the interpolation filter and by utilizing a variable step size forward and backward linear interpolation.

    Abstract translation: 异步数字采样率转换器包括用于存储输入数据值的随机存取存储器和用于存储缩减的一组内插滤波器系数的只读存储器。 输入数据以输入采样率写入随机存取存储器。 输出样本由给定输入数据流的乘法/累加引擎提供,滤波器系数根据请求在输出频率下产生输出采样。 用于从随机存取存储器读取输入数据的初始地址和来自只读存储器的系数的地址由自动定心方案提供,该自动定心方案是具有通过输入的近似馈送的数字积分器的第一阶闭环系统 输出采样率。 这种自动对中方案可以包括用于消除稳态误差的前馈低通滤波器和内插写入地址以减少噪声。 还可以提供确定输入到输入采样速率比的电路,以缩放系数地址和产生的输出采样以允许抽取。 该电路包括一种消除噪声的数字滞后形式。 通过依赖于内插滤波器的脉冲响应的对称性以及利用可变步长前后线性插值来减小ROM系数。

    ACCURATE LOW NOISE ANALOG TO DIGITAL CONVERTER SYSTEM
    6.
    发明申请
    ACCURATE LOW NOISE ANALOG TO DIGITAL CONVERTER SYSTEM 有权
    精确的低噪声模拟到数字转换器系统

    公开(公告)号:US20060250291A1

    公开(公告)日:2006-11-09

    申请号:US11122587

    申请日:2005-05-05

    CPC classification number: H03M1/08 H03M1/122

    Abstract: An accurate, low noise conditionally resetting integrator circuit in an analog to digital system samples, with an analog to digital converter, the output of an integrating circuit a number of times during a measuring period; isolates the input for the integrating circuit during sample event; generates a reset signal in response to the integrating circuit output reaching a predetermined level; and resets the feedback capacitor of the integrating circuit by isolating it from the amplifier circuit of the integrating circuit and connecting it to a reference source during a sample event.

    Abstract translation: 模拟数字系统中的精确低噪声有条件复位积分电路采样模数转换器,在测量期间多次输出积分电路; 在采样事件期间隔离积分电路的输入; 响应于所述积分电路输出达到预定水平而产生复位信号; 并且通过将其与积分电路的放大器电路隔离并且在采样事件期间将其连接到参考源来复位积分电路的反馈电容器。

    Calibratable analog-to-digital converter system
    7.
    发明申请
    Calibratable analog-to-digital converter system 有权
    可校准的模拟 - 数字转换器系统

    公开(公告)号:US20060176197A1

    公开(公告)日:2006-08-10

    申请号:US11349400

    申请日:2006-02-06

    CPC classification number: H03M1/1004 H03M1/0643

    Abstract: A calibratable analog-to-digital converter system with a split analog-to-digital converter architecture including N Analog-to-Digital Converters (ADCs) each configured to convert the same analog input signal into a digital signal. Calibration logic is responsive to the digital signals output by the N ADCs and is configured to calibrate each of the ADCs based on the digital signals output by each ADC.

    Abstract translation: 具有分立模数转换器架构的可校准模数转换器系统,包括N个模拟数字转换器(ADC),每个模拟数字转换器配置为将相同的模拟输入信号转换为数字信号。 校准逻辑响应由N个ADC输出的数字信号,并且被配置为基于每个ADC输出的数字信号校准每个ADC。

    Constant current supply system for a variable resistance load
    8.
    发明授权
    Constant current supply system for a variable resistance load 失效
    用于可变电阻负载的恒流供电系统

    公开(公告)号:US5804957A

    公开(公告)日:1998-09-08

    申请号:US910285

    申请日:1997-08-13

    Applicant: Michael Coln

    Inventor: Michael Coln

    CPC classification number: A61N1/0432 A61N1/30 A61N1/325 G05F1/575 H02M3/156

    Abstract: A constant current supply system for a variable resistance load includes first and second output terminals for applying a predetermined current to a variable resistance load; a constant current circuit connected to the second output terminal for providing the predetermined current to the load; a voltage supply connected to the first terminal for providing a voltage across the terminal and constant current circuit; and a voltage supply control circuit for monitoring the voltage at the second terminal across the constant current circuit and adjusting the voltage supply to maintain the second terminal at a preselected voltage for maintaining the predetermined current to the variable resistance load.

    Abstract translation: 用于可变电阻负载的恒定电流供应系统包括用于向可变电阻负载施加预定电流的第一和第二输出端子; 连接到第二输出端子的恒流电路,用于向负载提供预定电流; 连接到第一端子的电压源,用于在端子和恒流电路两端提供电压; 以及电压供给控制电路,用于监视跨过恒流电路的第二端子处的电压,并调整电压供应,以将第二端子保持在预选电压,以将预定电流保持在可变电阻负载上。

    Asynchronous digital sample rate converter

    公开(公告)号:US5475628A

    公开(公告)日:1995-12-12

    申请号:US954149

    申请日:1992-09-30

    CPC classification number: H03H17/0628

    Abstract: An asynchronous digital sample rate converter includes a random access memory for storing input data values and a read only memory for storing a reduced set of interpolation filter coefficients. Input data is written to the random access memory at the input sample rate. Output samples are provided from a multiply/accumulate engine which given a stream of input data and filter coefficients produces an output sample upon request at the output frequency. The initial address for reading input data from the random access memory, and the addresses for coefficients from the read only memory are provided by an auto-centering scheme which is a first order closed loop system with a digital integrator fed by an approximation of the input to output sample rate ratio. This auto-centering scheme may include a feed forward low pass filter to cancel steady state error, and an interpolated write address to reduce noise. A circuit determining the output to input sample rate ratios can also be provided to scale coefficient addresses and resulting output samples to allow for decimation. This circuit includes a form of digital hysteresis to eliminate noise. The ROM coefficients are reduced by relying on the symmetry of the impulse response of the interpolation filter and by utilizing a variable step size forward and backward linear interpolation.

    Electrical overstress protection using through-silicon-via (TSV)
    10.
    发明授权
    Electrical overstress protection using through-silicon-via (TSV) 有权
    使用贯穿硅通孔(TSV)的电气过载保护

    公开(公告)号:US08525299B2

    公开(公告)日:2013-09-03

    申请号:US13786646

    申请日:2013-03-06

    Abstract: A semiconductor device formed on a substrate includes a first diode junction formation, a second diode junction formation, and at least one through-silicon-via (TSV), in which a cathode and an anode of the first diode are cross-connected to an anode and cathode of the second diode through the at least one TSV for achieving electrical robustness in through-silicon-via based integrated circuits, including photosensitive devices and circuits for signal processing applications.

    Abstract translation: 形成在衬底上的半导体器件包括第一二极管结形成,第二二极管结形成以及至少一个通硅通孔(TSV),其中第一二极管的阴极和阳极交叉连接到 通过至少一个TSV来实现第二二极管的阳极和阴极,以实现基于硅通孔的集成电路中的电鲁棒性,包括用于信号处理应用的光敏器件和电路。

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