公开(公告)号：US07796066B2

公开(公告)日：2010-09-14

申请号：US12710856

申请日：2010-02-23

申请人： Ayman A. Fayed ,  Russell Byrd ,  Baher Haroun

发明人： Ayman A. Fayed ,  Russell Byrd ,  Baher Haroun

IPC分类号： H03M1/06

CPC分类号： H03M3/488

摘要： System and method for common mode translation in continuous-time sigma-delta analog-to-digital converters. An embodiment includes a loop filter having an RC network coupled to a differential signal input, a Gm-C/Quantizer/DAC circuit (GQD) coupled to the loop filter, a common-mode level adjust circuit coupled to signal inputs of the GQD, and a tuning circuit coupled to the GQD and the common-mode level adjust circuit. The GQD evaluates an input signal provided by the RC network, computes a difference between a filtered input signal and the feedback quantization signal to generate an error signal, measures the error signal, and compensates for the error signal with sigma-delta noise-shaping. The common-mode level adjust circuit alters a common-mode level of a differential input signal to be substantially equal to a desired common-mode level and the tuning circuit provides a compensation voltage to the common-mode level adjust circuit based on a difference between the common-mode levels.

摘要翻译： 用于连续时间Σ-Δ模数转换器的共模转换的系统和方法。 一个实施例包括具有耦合到差分信号输入的RC网络的环路滤波器，耦合到环路滤波器的Gm-C /量化器/ DAC电路（GQD），耦合到GQD的信号输入的共模电平调整电路， 以及耦合到GQD和共模电平调整电路的调谐电路。 GQD评估由RC网络提供的输入信号，计算经滤波的输入信号和反馈量化信号之间的差异以产生误差信号，测量误差信号，并用Σ-Δ噪声整形补偿误差信号。 共模电平调节电路将差分输入信号的共模电平改变为基本上等于期望的共模电平，并且调谐电路基于两者之间的差异向共模电平调整电路提供补偿电压 共模级别。

公开(公告)号：US20100148844A1

公开(公告)日：2010-06-17

申请号：US12711035

申请日：2010-02-23

申请人： Ayman A. Fayad ,  Russell Byrd ,  Baher Haroun

发明人： Ayman A. Fayad ,  Russell Byrd ,  Baher Haroun

IPC分类号： H03L5/00

CPC分类号： H03M3/488

摘要： System and method for common mode translation in continuous-time sigma-delta analog-to-digital converters. An embodiment includes a loop filter having an RC network coupled to a differential signal input, a Gm-C/Quantizer/DAC circuit (GQD) coupled to the loop filter, a common-mode level adjust circuit coupled to signal inputs of the GQD, and a tuning circuit coupled to the GQD and the common-mode level adjust circuit. The GQD evaluates an input signal provided by the RC network, computes a difference between a filtered input signal and the feedback quantization signal to generate an error signal, measures the error signal, and compensates for the error signal with sigma-delta noise-shaping. The common-mode level adjust circuit alters a common-mode level of a differential input signal to be substantially equal to a desired common-mode level and the tuning circuit provides a compensation voltage to the common-mode level adjust circuit based on a difference between the common-mode levels.

公开(公告)号：US20100149013A1

公开(公告)日：2010-06-17

申请号：US12710856

申请日：2010-02-23

申请人： Ayman A. Fayed ,  Russell Byrd ,  Baher Haroun

发明人： Ayman A. Fayed ,  Russell Byrd ,  Baher Haroun

IPC分类号： H03M3/00

CPC分类号： H03M3/488

摘要： System and method for common mode translation in continuous-time sigma-delta analog-to-digital converters. An embodiment includes a loop filter having an RC network coupled to a differential signal input, a Gm-C/Quantizer/DAC circuit (GQD) coupled to the loop filter, a common-mode level adjust circuit coupled to signal inputs of the GQD, and a tuning circuit coupled to the GQD and the common-mode level adjust circuit. The GQD evaluates an input signal provided by the RC network, computes a difference between a filtered input signal and the feedback quantization signal to generate an error signal, measures the error signal, and compensates for the error signal with sigma-delta noise-shaping. The common-mode level adjust circuit alters a common-mode level of a differential input signal to be substantially equal to a desired common-mode level and the tuning circuit provides a compensation voltage to the common-mode level adjust circuit based on a difference between the common-mode levels.

公开(公告)号：US07679443B2

公开(公告)日：2010-03-16

申请号：US11729487

申请日：2007-03-29

申请人： Ayman A. Fayed ,  Russell Byrd ,  Baher Haroun

发明人： Ayman A. Fayed ,  Russell Byrd ,  Baher Haroun

IPC分类号： H03F3/45

CPC分类号： H03M3/488

摘要： System and method for common mode translation in continuous-time sigma-delta analog-to-digital converters. An embodiment includes a loop filter having an RC network coupled to a differential signal input, a Gm-C/Quantizer/DAC circuit (GQD) coupled to the loop filter, a common-mode level adjust circuit coupled to signal inputs of the GQD, and a tuning circuit coupled to the GQD and the common-mode level adjust circuit. The GQD evaluates an input signal provided by the RC network, computes a difference between a filtered input signal and the feedback quantization signal to generate an error signal, measures the error signal, and compensates for the error signal with sigma-delta noise-shaping. The common-mode level adjust circuit alters a common-mode level of a differential input signal to be substantially equal to a desired common-mode level and the tuning circuit provides a compensation voltage to the common-mode level adjust circuit based on a difference between the common-mode levels.

公开(公告)号：US08390496B2

公开(公告)日：2013-03-05

申请号：US12710889

申请日：2010-02-23

申请人： Ayman A. Fayed ,  Russell Byrd ,  Baher Haroun

发明人： Ayman A. Fayed ,  Russell Byrd ,  Baher Haroun

IPC分类号： H03M1/66

CPC分类号： H03M3/488

摘要： System and method for common mode translation in continuous-time sigma-delta analog-to-digital converters. An embodiment includes a loop filter having an RC network coupled to a differential signal input, a Gm-C/Quantizer/DAC circuit (GQD) coupled to the loop filter, a common-mode level adjust circuit coupled to signal inputs of the GQD, and a tuning circuit coupled to the GQD and the common-mode level adjust circuit. The GQD evaluates an input signal provided by the RC network. computes a difference between a filtered input signal and the feedback quantization signal to generate an error signal, measures the error signal, and compensates for the error signal with sigma-delta noise-shaping. The common-mode level adjust circuit alters a common-mode level of a differential input signal to be substantially equal to a desired common-mode level and the tuning circuit provides a compensation voltage to the common-mode level adjust circuit based on a difference between the common-mode levels.

摘要翻译： 用于连续时间Σ-Δ模数转换器的共模转换的系统和方法。 一个实施例包括具有耦合到差分信号输入的RC网络的环路滤波器，耦合到环路滤波器的Gm-C /量化器/ DAC电路（GQD），耦合到GQD的信号输入的共模电平调整电路， 以及耦合到GQD和共模电平调整电路的调谐电路。 GQD评估由RC网络提供的输入信号。 计算经过滤波的输入信号和反馈量化信号之间的差异，以产生误差信号，测量误差信号，并用Σ-Δ噪声整形来补偿误差信号。 共模电平调节电路将差分输入信号的共模电平改变为基本上等于期望的共模电平，并且调谐电路基于两者之间的差异向共模电平调整电路提供补偿电压 共模级别。

公开(公告)号：US08120425B2

公开(公告)日：2012-02-21

申请号：US12710928

申请日：2010-02-23

申请人： Ayman A. Fayed ,  Russell Byrd ,  Baher Haroun

发明人： Ayman A. Fayed ,  Russell Byrd ,  Baher Haroun

IPC分类号： H03F3/45

CPC分类号： H03M3/488

摘要： System and method for common mode translation in continuous-time sigma-delta analog-to-digital converters. An embodiment includes a loop filter having an RC network coupled to a differential signal input, a Gm-C/Quantizer/DAC circuit (GQD) coupled to the loop filter, a common-mode level adjust circuit coupled to signal inputs of the GQD, and a tuning circuit coupled to the GQD and the common-mode level adjust circuit. The GQD evaluates an input signal provided by the RC network, computes a difference between a filtered input signal and the feedback quantization signal to generate an error signal, measures the error signal, and compensates for the error signal with sigma-delta noise-shaping. The common-mode level adjust circuit alters a common-mode level of a differential input signal to be substantially equal to a desired common-mode level and the tuning circuit provides a compensation voltage to the common-mode level adjust circuit based on a difference between the common-mode levels.

摘要翻译： 用于连续时间Σ-Δ模数转换器的共模转换的系统和方法。 一个实施例包括具有耦合到差分信号输入的RC网络的环路滤波器，耦合到环路滤波器的Gm-C /量化器/ DAC电路（GQD），耦合到GQD的信号输入的共模电平调整电路， 以及耦合到GQD和共模电平调整电路的调谐电路。 GQD评估由RC网络提供的输入信号，计算经滤波的输入信号和反馈量化信号之间的差异以产生误差信号，测量误差信号，并用Σ-Δ噪声整形补偿误差信号。 共模电平调节电路将差分输入信号的共模电平改变为基本上等于期望的共模电平，并且调谐电路基于两者之间的差异向共模电平调整电路提供补偿电压 共模级别。

公开(公告)号：US20100148850A1

公开(公告)日：2010-06-17

申请号：US12710889

申请日：2010-02-23

申请人： Ayman A. Fayad ,  Russell Byrd ,  Baher Haroun

发明人： Ayman A. Fayad ,  Russell Byrd ,  Baher Haroun

IPC分类号： H03K17/687

CPC分类号： H03M3/488

摘要： System and method for common mode translation in continuous-time sigma-delta analog-to-digital converters. An embodiment includes a loop filter having an RC network coupled to a differential signal input, a Gm-C/Quantizer/DAC circuit (GQD) coupled to the loop filter, a common-mode level adjust circuit coupled to signal inputs of the GQD, and a tuning circuit coupled to the GQD and the common-mode level adjust circuit. The GQD evaluates an input signal provided by the RC network. computes a difference between a filtered input signal and the feedback quantization signal to generate an error signal, measures the error signal, and compensates for the error signal with sigma-delta noise-shaping. The common-mode level adjust circuit alters a common-mode level of a differential input signal to be substantially equal to a desired common-mode level and the tuning circuit provides a compensation voltage to the common-mode level adjust circuit based on a difference between the common-mode levels.

摘要翻译： 用于连续时间Σ-Δ模数转换器的共模转换的系统和方法。 一个实施例包括具有耦合到差分信号输入的RC网络的环路滤波器，耦合到环路滤波器的Gm-C /量化器/ DAC电路（GQD），耦合到GQD的信号输入的共模电平调整电路， 以及耦合到GQD和共模电平调整电路的调谐电路。 GQD评估由RC网络提供的输入信号。 计算经过滤波的输入信号和反馈量化信号之间的差异，以产生误差信号，测量误差信号，并用Σ-Δ噪声整形来补偿误差信号。 共模电平调节电路将差分输入信号的共模电平改变为基本上等于期望的共模电平，并且调谐电路基于两者之间的差异向共模电平调整电路提供补偿电压 共模级别。

公开(公告)号：US07072463B1

公开(公告)日：2006-07-04

申请号：US09660255

申请日：2000-09-12

申请人： Russell Byrd ,  James M. Little

发明人： Russell Byrd ,  James M. Little

IPC分类号： H04M1/00

CPC分类号： H04M1/738

摘要： A line interface capable of connecting to a variety of transport mediums, each having a different impedance. The line interface comprises a programmable resistor. The programmable resistor along with an external resistor provide a range of resistor values which are used to substantially match the impedance requirements of the various transport mediums.

摘要翻译： 一种能够连接到各种具有不同阻抗的传输介质的线路接口。 线路接口包括可编程电阻器。 可编程电阻器与外部电阻器一起提供一定范围的电阻值，用于基本上匹配各种传输介质的阻抗要求。

公开(公告)号：US20100156497A1

公开(公告)日：2010-06-24

申请号：US12710928

申请日：2010-02-23

申请人： Ayman A. Fayed ,  Russell Byrd ,  Baher Haroun

发明人： Ayman A. Fayed ,  Russell Byrd ,  Baher Haroun

IPC分类号： H03L5/00

CPC分类号： H03M3/488

摘要： System and method for common mode translation in continuous-time sigma-delta analog-to-digital converters. An embodiment includes a loop filter having an RC network coupled to a differential signal input, a Gm-C/Quantizer/DAC circuit (GQD) coupled to the loop filter, a common-mode level adjust circuit coupled to signal inputs of the GQD, and a tuning circuit coupled to the GQD and the common-mode level adjust circuit. The GQD evaluates an input signal provided by the RC network, computes a difference between a filtered input signal and the feedback quantization signal to generate an error signal, measures the error signal, and compensates for the error signal with sigma-delta noise-shaping. The common-mode level adjust circuit alters a common-mode level of a differential input signal to be substantially equal to a desired common-mode level and the tuning circuit provides a compensation voltage to the common-mode level adjust circuit based on a difference between the common-mode levels.

摘要翻译： 用于连续时间Σ-Δ模数转换器的共模转换的系统和方法。 一个实施例包括具有耦合到差分信号输入的RC网络的环路滤波器，耦合到环路滤波器的Gm-C /量化器/ DAC电路（GQD），耦合到GQD的信号输入的共模电平调整电路， 以及耦合到GQD和共模电平调整电路的调谐电路。 GQD评估由RC网络提供的输入信号，计算经滤波的输入信号和反馈量化信号之间的差异以产生误差信号，测量误差信号，并用Σ-Δ噪声整形补偿误差信号。 共模电平调节电路将差分输入信号的共模电平改变为基本上等于期望的共模电平，并且调谐电路基于两者之间的差异向共模电平调整电路提供补偿电压 共模级别。

公开(公告)号：US20080238746A1

公开(公告)日：2008-10-02

申请号：US11729487

申请日：2007-03-29

申请人： Ayman A. Fayed ,  Russell Byrd ,  Baher Haroun

发明人： Ayman A. Fayed ,  Russell Byrd ,  Baher Haroun

IPC分类号： H03M3/00

CPC分类号： H03M3/488

摘要： System and method for common mode translation in continuous-time sigma-delta analog-to-digital converters. An embodiment includes a loop filter having an RC network coupled to a differential signal input, a Gm-C/Quantizer/DAC circuit (GQD) coupled to the loop filter, a common-mode level adjust circuit coupled to signal inputs of the GQD, and a tuning circuit coupled to the GQD and the common-mode level adjust circuit. The GQD evaluates an input signal provided by the RC network, computes a difference between a filtered input signal and the feedback quantization signal to generate an error signal, measures the error signal, and compensates for the error signal with sigma-delta noise-shaping. The common-mode level adjust circuit alters a common-mode level of a differential input signal to be substantially equal to a desired common-mode level and the tuning circuit provides a compensation voltage to the common-mode level adjust circuit based on a difference between the common-mode levels.

摘要翻译： 用于连续时间Σ-Δ模数转换器的共模转换的系统和方法。 一个实施例包括具有耦合到差分信号输入的RC网络的环路滤波器，耦合到环路滤波器的Gm-C /量化器/ DAC电路（GQD），耦合到GQD的信号输入的共模电平调整电路， 以及耦合到GQD和共模电平调整电路的调谐电路。 GQD评估由RC网络提供的输入信号，计算经滤波的输入信号和反馈量化信号之间的差异以产生误差信号，测量误差信号，并用Σ-Δ噪声整形补偿误差信号。 共模电平调节电路将差分输入信号的共模电平改变为基本上等于期望的共模电平，并且调谐电路基于两者之间的差异向共模电平调整电路提供补偿电压 共模级别。