公开(公告)号：US07333039B2

公开(公告)日：2008-02-19

申请号：US11537678

申请日：2006-10-02

申请人： Wu-Hung Lu ,  Yi-Bin Hsieh

发明人： Wu-Hung Lu ,  Yi-Bin Hsieh

IPC分类号： H03M1/00

CPC分类号： H03M1/0604 ,  H03M1/0682 ,  H03M1/403

摘要： A cyclic pipeline analog to digital converter includes a dual mode sample and hold circuit, a multiplying digital to analog converter (MDAC), a sub-analog to digital converter (sub-ADC) and a decoder. The dual mode sample and hold circuit has a charge-redistribution mode and a flip-around mode. The dual mode sample and hold circuit receives first and second input voltages and first and second feedback voltages and generates a differential output signal pair. The MDAC receives the differential output signal pair and a digital multiplying word and generates the first and second feedback voltages. The sub-ADC receives the differential output signal pair and generates the digital multiplying word and a digital output word. The decoder converts the digital output word to a digital output corresponding to the first and second input voltages.

摘要翻译： 循环管线模数转换器包括双模式采样和保持电路，乘法数模转换器（MDAC），子模数转换器（sub-ADC）和解码器。 双模式采样和保持电路具有电荷再分配模式和翻转模式。 双模式采样和保持电路接收第一和第二输入电压以及第一和第二反馈电压并产生差分输出信号对。 MDAC接收差分输出信号对和数字乘法字，并产生第一和第二反馈电压。 子ADC接收差分输出信号对并产生数字乘法字和数字输出字。 解码器将数字输出字转换成对应于第一和第二输入电压的数字输出。

公开(公告)号：US20070090984A1

公开(公告)日：2007-04-26

申请号：US11537678

申请日：2006-10-02

申请人： Wu-Hung Lu ,  Yi-Bin Hsieh

发明人： Wu-Hung Lu ,  Yi-Bin Hsieh

IPC分类号： H03M1/12

CPC分类号： H03M1/0604 ,  H03M1/0682 ,  H03M1/403

摘要： A cyclic pipeline analog to digital converter includes a dual mode sample and hold circuit, a multiplying digital to analog converter (MDAC), a sub-analog to digital converter (sub-ADC) and a decoder. The dual mode sample and hold circuit has a charge-redistribution mode and a flip-around mode. The dual mode sample and hold circuit receives first and second input voltages and first and second feedback voltages and generates a differential output signal pair. The MDAC receives the differential output signal pair and a digital multiplying word and generates the first and second feedback voltages. The sub-ADC receives the differential output signal pair and generates the digital multiplying word and a digital output word. The decoder converts the digital output word to a digital output corresponding to the first and second input voltages.

摘要翻译： 循环管线模数转换器包括双模式采样和保持电路，乘法数模转换器（MDAC），子模数转换器（sub-ADC）和解码器。 双模式采样和保持电路具有电荷再分配模式和翻转模式。 双模式采样和保持电路接收第一和第二输入电压以及第一和第二反馈电压并产生差分输出信号对。 MDAC接收差分输出信号对和数字乘法字，并产生第一和第二反馈电压。 子ADC接收差分输出信号对并产生数字乘法字和数字输出字。 解码器将数字输出字转换成对应于第一和第二输入电压的数字输出。

公开(公告)号：US07429893B2

公开(公告)日：2008-09-30

申请号：US11467922

申请日：2006-08-29

申请人： Wu-Hung Lu

发明人： Wu-Hung Lu

IPC分类号： H03G3/00

CPC分类号： H03F3/45183 ,  H03F3/45744 ,  H03F2203/45352 ,  H03F2203/45466 ,  H03F2203/45508 ,  H03F2203/45641 ,  H03F2203/45644 ,  H03F2203/45681 ,  H03G1/0023

摘要： A variable gain amplifier, VGA, and related method are provided. A reference current variably controlled by a control signal is provided, then the reference current is divided to a load current and an input-control current according to differential driving between a constant reference signal and the control signal. Then the input-control current and the load current are used to respectively bias an input stage and an active load of the VGA, such that a gain of the VGA is controlled by a ratio between the input-control current and the load current. In this way, the gain can be controlled by the control signal. The VGA can provide wider gain range and better variable gain characteristics because a sum and a difference of the input-control current and the load current are both controlled by the control signal.

摘要翻译： 提供了可变增益放大器，VGA和相关方法。 提供由控制信号可变地控制的参考电流，然后根据恒定参考信号和控制信号之间的差动驱动将参考电流分为负载电流和输入控制电流。 然后使用输入控制电流和负载电流来分别偏置VGA的输入级和有功负载，使得VGA的增益由输入控制电流和负载电流之间的比率控制。 以这种方式，可以通过控制信号来控制增益。 VGA可以提供更宽的增益范围和更好的可变增益特性，因为输入控制电流和负载电流的和和差都由控制信号控制。

公开(公告)号：US08648638B2

公开(公告)日：2014-02-11

申请号：US13397087

申请日：2012-02-15

申请人： Wu-Hung Lu

发明人： Wu-Hung Lu

IPC分类号： H03K5/12

CPC分类号： H03K19/00361

摘要： Electronic chips with slew-rate control at output signals are disclosed. A disclosed electronic chip includes a slew-rate control circuit and slew-rate control charging and discharging transistors wherein the transistors are coupled at an output pin of the electronic chip. According to an input signal for an output stage of the electronic chip and a signal at the output pin, the slew-rate control circuit generates the slew-rate control charging and discharging signals to separately control the slew-rate control charging and discharging transistors to charge/discharge a load capacitance at the output pin.

摘要翻译： 公开了以输出信号进行压摆率控制的电子芯片。 所公开的电子芯片包括压摆率控制电路和摆率控制充电和放电晶体管，其中晶体管耦合在电子芯片的输出引脚处。 根据用于电子芯片的输出级的输入信号和输出引脚的信号，转换速率控制电路产生转换速率控制充放电信号，以将转换速率控制充电和放电晶体管分别控制为 在输出引脚上充电/放电负载电容。

公开(公告)号：US08547173B2

公开(公告)日：2013-10-01

申请号：US12837754

申请日：2010-07-16

申请人： Wu-Hung Lu

发明人： Wu-Hung Lu

IPC分类号： H03G3/20

CPC分类号： H03F3/187 ,  H03F3/45475 ,  H03F2203/45522

摘要： A signal amplifying circuit is provided. The signal amplifying circuit includes a signal amplifier and a control circuit. The control circuit includes a compare unit and a register unit. The compare unit compares an input signal of the signal amplifier with a reference signal to generate a compare signal. The register unit receives and registers a control signal to be transmitted to the signal amplifier, and provides a registered signal to the signal amplifier according to the registered control signal when the compare signal is changed.

摘要翻译： 提供信号放大电路。 信号放大电路包括信号放大器和控制电路。 控制电路包括比较单元和寄存器单元。 比较单元将信号放大器的输入信号与参考信号进行比较以产生比较信号。 寄存器单元接收并寄存要发送到信号放大器的控制信号，并且当比较信号改变时，根据登记的控制信号向信号放大器提供登记信号。

公开(公告)号：US08497793B2

公开(公告)日：2013-07-30

申请号：US13418232

申请日：2012-03-12

申请人： Wu-Hung Lu

发明人： Wu-Hung Lu

IPC分类号： H03M3/00

CPC分类号： H03M3/34 ,  H03M3/43

摘要： An analog-to-digital converter with delta-sigma modulation and the modulation unit thereof are disclosed, wherein, for each modulation unit, a pair of input capacitors, a pair of integration capacitors and a differential feedback are operated in a swapping manner for the positive path and the negative path, such that circuit mismatch problems are effectively removed.

摘要翻译： 公开了具有Δ-Σ调制的模数转换器及其调制单元，其中，对于每个调制单元，一对输入电容器，一对积分电容器和差分反馈以交换方式操作，用于 正路径和负路径，使得电路不匹配问题被有效地去除。

公开(公告)号：US20110261976A1

公开(公告)日：2011-10-27

申请号：US12837754

申请日：2010-07-16

申请人： Wu-Hung Lu

发明人： Wu-Hung Lu

IPC分类号： H04B15/00

CPC分类号： H03F3/187 ,  H03F3/45475 ,  H03F2203/45522

摘要： A signal amplifying circuit is provided. The signal amplifying circuit includes a signal amplifier and a control circuit. The control circuit includes a compare unit and a register unit. The compare unit compares an input signal of the signal amplifier with a reference signal to generate a compare signal. The register unit receives and registers a control signal to be transmitted to the signal amplifier, and provides a registered signal to the signal amplifier according to the registered control signal when the compare signal is changed.

摘要翻译： 提供信号放大电路。 信号放大电路包括信号放大器和控制电路。 控制电路包括比较单元和寄存器单元。 比较单元将信号放大器的输入信号与参考信号进行比较以产生比较信号。 寄存器单元接收并寄存要发送到信号放大器的控制信号，并且当比较信号改变时，根据登记的控制信号向信号放大器提供登记信号。

公开(公告)号：US20070096818A1

公开(公告)日：2007-05-03

申请号：US11467922

申请日：2006-08-29

申请人： Wu-Hung Lu

发明人： Wu-Hung Lu

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F3/45744 ,  H03F2203/45352 ,  H03F2203/45466 ,  H03F2203/45508 ,  H03F2203/45641 ,  H03F2203/45644 ,  H03F2203/45681 ,  H03G1/0023

摘要： A variable gain amplifier, VGA, and related method are provided. A reference current variably controlled by a control signal is provided, then the reference current is divided to a load current and an input-control current according to differential driving between a constant reference signal and the control signal. Then the input-control current and the load current are used to respectively bias an input stage and an active load of the VGA, such that a gain of the VGA is controlled by a ratio between the input-control current and the load current. In this way, the gain can be controlled by the control signal. The VGA can provide wider gain range and better variable gain characteristics because a sum and a difference of the input-control current and the load current are both controlled by the control signal.

摘要翻译： 提供了可变增益放大器，VGA和相关方法。 提供由控制信号可变地控制的参考电流，然后根据恒定参考信号和控制信号之间的差动驱动将参考电流分为负载电流和输入控制电流。 然后使用输入控制电流和负载电流来分别偏置VGA的输入级和有功负载，使得VGA的增益由输入控制电流和负载电流之间的比率控制。 以这种方式，可以通过控制信号来控制增益。 VGA可以提供更宽的增益范围和更好的可变增益特性，因为输入控制电流和负载电流的和和差都由控制信号控制。