公开(公告)号：US07358805B2

公开(公告)日：2008-04-15

申请号：US11467170

申请日：2006-08-25

申请人： Tim K. Shia ,  Chi-Chen Chung ,  Long-Xi Chang

发明人： Tim K. Shia ,  Chi-Chen Chung ,  Long-Xi Chang

IPC分类号： H03F3/45

CPC分类号： H03F3/45475 ,  G11C7/062 ,  H03F1/34 ,  H03F3/393 ,  H03F3/45928 ,  H03F2200/213 ,  H03F2200/264 ,  H03F2203/45078 ,  H03F2203/45101 ,  H03F2203/45134 ,  H03F2203/45138 ,  H03F2203/45424 ,  H03F2203/45512 ,  H03F2203/45586 ,  H03F2203/45588

摘要： A fully differential sensing apparatus and an input common mode feedback circuit are provided. The input common mode feedback circuit includes a common mode error amplifier and a plurality of adaptive conductance elements. Each adaptive conductance element behaves with a low impedance characteristic when its anode voltage is greater than its cathode voltage by a positive threshold voltage or, on the contrary, when the anode voltage of such an adaptive conductance element is lower than its cathode voltage by a negative threshold voltage, the adaptive element also behaves with a low impedance characteristic; otherwise the aforementioned adaptive conductance element behaves with a high impedance characteristic. The common mode error amplifier and a plurality of such adaptive conductance elements form a negative feedback loop to effectively maintain the input common voltage of a fully differential input amplifier, which can be used for a fully differential sensing apparatus.

摘要翻译： 提供全差分感测装置和输入共模反馈电路。 输入共模反馈电路包括共模误差放大器和多个自适应电导元件。 当其阳极电压大于其阴极电压的正阈值电压时，每个自适应电导元件都具有低阻抗特性，或者相反，当这种自适应电导元件的阳极电压低于其阴极电压为负 阈值电压，自适应元件也具有低阻抗特性; 否则上述自适应电导元件具有高阻抗特性。 共模误差放大器和多个这样的自适应电导元件形成负反馈回路以有效地保持全差分输入放大器的输入公共电压，其可以用于全差分感测装置。

公开(公告)号：US20070285166A1

公开(公告)日：2007-12-13

申请号：US11467170

申请日：2006-08-25

申请人： Tim K. SHIA ,  Chi-Chen Chung ,  Long-Xi Chang

发明人： Tim K. SHIA ,  Chi-Chen Chung ,  Long-Xi Chang

IPC分类号： H03F3/45

CPC分类号： H03F3/45475 ,  G11C7/062 ,  H03F1/34 ,  H03F3/393 ,  H03F3/45928 ,  H03F2200/213 ,  H03F2200/264 ,  H03F2203/45078 ,  H03F2203/45101 ,  H03F2203/45134 ,  H03F2203/45138 ,  H03F2203/45424 ,  H03F2203/45512 ,  H03F2203/45586 ,  H03F2203/45588

摘要： A fully differential sensing apparatus and an input common mode feedback circuit are provided. The input common mode feedback circuit includes a common mode error amplifier and a plurality of adaptive conductance elements. Each adaptive conductance element behaves with a low impedance characteristic when its anode voltage is greater than its cathode voltage by a positive threshold voltage or, on the contrary, when the anode voltage of such an adaptive conductance element is lower than its cathode voltage by a negative threshold voltage, the adaptive element also behaves with a low impedance characteristic; otherwise the aforementioned adaptive conductance element behaves with a high impedance characteristic. The common mode error amplifier and a plurality of such adaptive conductance elements form a negative feedback loop to effectively maintain the input common voltage of a fully differential input amplifier, which can be used for a fully differential sensing apparatus.

摘要翻译： 提供全差分感测装置和输入共模反馈电路。 输入共模反馈电路包括共模误差放大器和多个自适应电导元件。 当其阳极电压大于其阴极电压的正阈值电压时，每个自适应电导元件都具有低阻抗特性，或者相反，当这种自适应电导元件的阳极电压低于其阴极电压为负 阈值电压，自适应元件也具有低阻抗特性; 否则上述自适应电导元件具有高阻抗特性。 共模误差放大器和多个这样的自适应电导元件形成负反馈回路以有效地保持全差分输入放大器的输入公共电压，其可以用于全差分感测装置。

公开(公告)号：US20070018865A1

公开(公告)日：2007-01-25

申请号：US11185287

申请日：2005-07-20

申请人： Long-Xi Chang ,  Chia-Chun Hung

发明人： Long-Xi Chang ,  Chia-Chun Hung

IPC分类号： H03M3/00

CPC分类号： H03M3/448 ,  H03M3/424 ,  H03M3/454 ,  H03M7/3026 ,  H03M7/3035

摘要： A third order sigma-delta modulator comprises a first summing unit for receiving an input signal, a first integrator network connected to an output of the first summing unit, a second integrator network for receiving an output of the first integrator network, a second summing unit connected to an output of the second integrator network, a third integrator network connected to an output of the second summing unit, and a feed-forward path from the output of the first integrator network to an input of the second summing unit.

摘要翻译： 第三级Σ-Δ调制器包括用于接收输入信号的第一求和单元，连接到第一求和单元的输出的第一积分器网络，用于接收第一积分器网络的输出的第二积分器网络，第二加法单元 连接到第二积分器网络的输出，连接到第二求和单元的输出的第三积分器网络，以及从第一积分器网络的输出到第二求和单元的输入的前馈路径。

公开(公告)号：US07253758B2

公开(公告)日：2007-08-07

申请号：US11185287

申请日：2005-07-20

申请人： Long-Xi Chang ,  Chia-Chun Hung

发明人： Long-Xi Chang ,  Chia-Chun Hung

IPC分类号： H03M3/00

CPC分类号： H03M3/448 ,  H03M3/424 ,  H03M3/454 ,  H03M7/3026 ,  H03M7/3035

摘要： A third order sigma-delta modulator comprises a first summing unit for receiving an input signal, a first integrator network connected to an output of the first summing unit, a second integrator network for receiving an output of the first integrator network, a second summing unit connected to an output of the second integrator network, a third integrator network connected to an output of the second summing unit, and a feed-forward path from the output of the first integrator network to an input of the second summing unit.