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1. 发明申请

WO2004079915A3 FEEDBACK STEERING DELTA-SIGMA MODULATORS AND SYSTEMS USING THE SAME 审中-公开
标题翻译：反馈转向三角形调制器和使用它的系统
公开(公告)号：WO2004079915A3
公开(公告)日：2005-10-06
申请号：PCT/US2004006881
申请日：2004-03-05
申请人： CIRRUS LOGIC INC , MELANSON JOHN LAURENCE , FEI XIAOFAN , GABORIAU JOHANN G
发明人： MELANSON JOHN LAURENCE , FEI XIAOFAN , GABORIAU JOHANN G
IPC分类号： H03M20060101 , H03M3/00 , H03M7/32 , H03M7/34 , H03M7/36 , H03M7/38
CPC分类号： H03M7/3006 , H03M7/3011 , H03M7/3026 , H03M7/3033 , H03M7/3037
摘要： A digital to analog converter including an input for receiving an input signal, a ramp generator, and a delta-sigma modulator responsive to the input signal and an output of the ramp generator. An order of a noise shaping transfer function of the delta-sigma modulator is response to a level of the output of the ramp generator.
摘要翻译：数模转换器，包括用于接收输入信号的输入端，斜坡发生器和响应于输入信号和斜坡发生器输出的Δ-Σ调制器。 Δ-Σ调制器的噪声整形传递函数的顺序响应于斜坡发生器的输出电平。

2. 发明专利

JP2006081165A Single ended switched capacitor circuit 审中-公开
标题翻译：单端开关电容电路
公开(公告)号：JP2006081165A
公开(公告)日：2006-03-23
申请号：JP2005227404
申请日：2005-08-05
申请人： Cirrus Logic Inc , シラスロジック、インコーポレイテッド
发明人： GABORIAU JOHANN G , WEISER JOSEPH J
IPC分类号： H03H19/00 , H03K5/08 , H03M1/08
CPC分类号： H03M1/08
摘要： PROBLEM TO BE SOLVED: To remove the effect of common mode noise in a single end non-differential switched capacitor circuit.
SOLUTION: The circuit creates a capacitance divider using sampling capacitors Cs to create a stable and a noise-free common mode voltage (Vcom) signal. Once created, this Vcom signal is coupled between large common mode capacities Ccom which are preferably located outside to further be controlled in their values. Thereafter, the voltage Vcom can be stabilized while data are disconnected. In this way, the Vcom signal is not provided to the circuit, but instead, cleanly generated within the circuit itself when needed. Thereafter, the generated Vcom signal is made parallel with an integration capacitor C1 to generate the non-differential output voltage Vout. Then, the sampling capacitors Cs are shorted to remove charge stored in them and the process is repeated.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：消除单端非差分开关电容电路中共模噪声的影响。
解决方案：该电路使用采样电容器Cs创建一个电容分压器，以产生稳定和无噪声的共模电压（Vcom）信号。一旦创建，该Vcom信号耦合在大型共模容量Ccom之间，优选位于外部，以进一步控制其值。此后，电压Vcom可以在数据断开时稳定。以这种方式，Vcom信号不提供给电路，而是在需要时在电路本身内干净地产生。此后，所生成的Vcom信号与积分电容器C1并联，以产生非差分输出电压Vout。然后，采样电容器Cs短路以除去其中存储的电荷，并重复该过程。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

DE602005012029D1 未知
公开(公告)号：DE602005012029D1
公开(公告)日：2009-02-12
申请号：DE602005012029
申请日：2005-08-05
申请人： CIRRUS LOGIC INC
发明人： GABORIAU JOHANN G , WEISER JOSEPH J
IPC分类号： H03M1/08
摘要： A single-ended, non-differential switched capacitor circuit (50) is disclosed which removes the effect of common mode noise. To this end, the circuit (50) creates a capacitance divider using the sampling capacitors (Cs) to create a stable and noise-free common mode voltage (Vcom) signal. Once created, this Vcom signal is coupled across a large common mode capacitance (Ccom) which is preferably off chip, to further control its value. Thereafter, the voltage Vcom is preferably allowed to settle while the data is disconnected. In this way, the Vcom signal is not provided to the circuit (50), but instead is cleanly generated within the circuit (50) itself when needed. Thereafter, the generated Vcom signal is paralleled with the integration capacitor (C1) to produce the non-differential output voltage Vout. Then, the sampling capacitors (Cs) are shorted to remove any charges stored on them and the process is repeated.

4. 发明公开

EP1599944A4 FEEDBACK STEERING DELTA-SIGMA MODULATORS AND SYSTEMS USING THE SAME 审中-公开
标题翻译：反馈控制Δ-Σ调制和系统
公开(公告)号：EP1599944A4
公开(公告)日：2006-03-22
申请号：EP04718076
申请日：2004-03-05
申请人： CIRRUS LOGIC INC
发明人： MELANSON JOHN LAURENCE , FEI XIAOFAN , GABORIAU JOHANN G
IPC分类号： H03M3/00 , H03M20060101 , H03M7/00 , H03M7/32 , H03M7/34 , H03M7/36 , H03M7/38
CPC分类号： H03M7/3006 , H03M7/3011 , H03M7/3026 , H03M7/3033 , H03M7/3037
摘要： A digital to analog converter including an input for receiving an input signal, a ramp generator, and a delta-sigma modulator responsive to the input signal and an output of the ramp generator. An order of a noise shaping transfer function of the delta-sigma modulator is response to a level of the output of the ramp generator.

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