公开(公告)号：US20150280663A1

公开(公告)日：2015-10-01

申请号：US14665374

申请日：2015-03-23

申请人： MegaChips Corporation

发明人： Yuuki NISHIZAWA

IPC分类号： H03F3/45

CPC分类号： H03F3/45076 ,  H03F1/14 ,  H03F3/45192 ,  H03F3/45475 ,  H03F3/45632 ,  H03F2200/135 ,  H03F2200/153 ,  H03F2203/45052 ,  H03F2203/45264

摘要： An amplifier circuit outputs a control signal for controlling a control target circuit and receives input of a feedback signal from the control target circuit. The amplifier circuit and the control target circuit constitute a feedback loop that includes a plurality of poles. A semiconductor capacitive element is provided for phase compensation in the feedback loop. The amplifier circuit includes an output branch that includes a first transistor having a first current terminal from which the control signal is output and a second current terminal connected to a power supply potential, and a branch that is connected in parallel to the output branch and includes a cascode circuit. The cascode circuit includes a second transistor having third and fourth current terminals, and a third transistor having fifth and sixth current terminals. The fourth and fifth current terminals are connected to each other. The semiconductor capacitive element that obtains the Miller effect is connected between the control target circuit and the fourth and fifth current terminals.

摘要翻译： 放大电路输出用于控制控制对象电路的控制信号，并接收来自控制对象电路的反馈信号的输入。 放大器电路和控制对象电路构成包括多个极的反馈回路。 在反馈回路中提供半导体电容元件用于相位补偿。 放大器电路包括输出支路，该输出支路包括第一晶体管，第一晶体管具有输出控制信号的第一电流端子和连接到电源电位的第二电流端子，以及与输出支路并联连接的支路， 一个共源共享电路。 共射共振电路包括具有第三和第四电流端子的第二晶体管，以及具有第五和第六电流端子的第三晶体管。 第四和第五电流端子彼此连接。 获得米勒效应的半导体电容元件连接在控制目标电路和第四和第五电流端子之间。

公开(公告)号：US07446607B2

公开(公告)日：2008-11-04

申请号：US11799993

申请日：2007-05-03

申请人： Mu-Kyeng Jung ,  Jae-Whui Kim ,  Bai-Sun Kong

发明人： Mu-Kyeng Jung ,  Jae-Whui Kim ,  Bai-Sun Kong

IPC分类号： H03F3/45

CPC分类号： H03F1/223 ,  H03F3/45192 ,  H03F3/45632 ,  H03F2200/513 ,  H03F2203/45052 ,  H03F2203/45292 ,  H03F2203/45302 ,  H03F2203/45652

摘要： A regulated cascode circuit includes a first PMOS FET and a second PMOS FET connected in series between a first terminal that receives a first supply voltage and an output terminal, a first NMOS FET and a second NMOS FET connected in series between the output terminal and a second terminal that receives a second supply voltage, and a regulation circuit. The regulation circuit outputs a first control signal for stabilizing a voltage at a drain of the first PMOS FET to a gate of the second PMOS FET based on a voltage of the drain of the first PMOS FET and outputs a second control signal for stabilizing a voltage change in a source of the first NMOS FET to a gate of the first NMOS FET based on a voltage of the source of the first NMOS FET.

公开(公告)号：US07443237B1

公开(公告)日：2008-10-28

申请号：US11445237

申请日：2006-06-02

申请人： Hengsheng Liu

发明人： Hengsheng Liu

IPC分类号： H03F3/45

CPC分类号： H03F3/45192 ,  H03F2203/45028 ,  H03F2203/45052 ,  H03F2203/45056 ,  H03F2203/45248 ,  H03F2203/45301 ,  H03F2203/45356

摘要： A folded cascode amplifier having improved slew comprises an input differential transistor pair circuit, a cascode branch circuit coupled to the differential pair circuit, and a boost circuit for increasing branch current when the amplifier is in a slew condition. The additional current increases slew of the amplifier without negatively affecting amplifier characteristics.

摘要翻译： 具有改进的转换的折叠共源共栅放大器包括输入差分晶体管对电路，耦合到差分对电路的共源共共分支电路和用于在放大器处于转换状态时增加分支电流的升压电路。 附加电流增加放大器的转换，而不会对放大器特性产生不利影响。

公开(公告)号：US07358811B2

公开(公告)日：2008-04-15

申请号：US11339523

申请日：2006-01-26

申请人： Jeongwook Koh ,  Hoon-tae Kim ,  Kyoung-sik Seol ,  Gyu-hyeong Cho

发明人： Jeongwook Koh ,  Hoon-tae Kim ,  Kyoung-sik Seol ,  Gyu-hyeong Cho

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F3/45188 ,  H03F3/45197 ,  H03F2203/45052 ,  H03F2203/45244 ,  H03F2203/45318 ,  H03F2203/45352 ,  H03F2203/45366 ,  H03F2203/45458 ,  H03F2203/45466 ,  H03F2203/45492 ,  H03G1/0029

摘要： Provided is a complementary metal oxide semiconductor variable gain amplifier controlling a dB linear gain and a method of controlling the dB linear gain. The complimentary metal oxide semiconductor variable gain amplifier includes: first through fourth transistors differentially receiving first and second input voltages and amplifying the first and second input voltage using a predetermined gain; fifth and sixth transistors controlling a transconductance according to a control voltage to control the predetermined gain; and first and second resistors generating an output voltage having the predetermined gain according to an output current generated by the fifth and sixth transistors.

摘要翻译： 提供了控制dB线性增益的互补金属氧化物半导体可变增益放大器和控制dB线性增益的方法。 互补金属氧化物半导体可变增益放大器包括：第一至第四晶体管，差分地接收第一和第二输入电压，并使用预定增益放大第一和第二输入电压; 第五和第六晶体管根据控制电压控制跨导以控制预定的增益; 以及根据由第五和第六晶体管产生的输出电流产生具有预定增益的输出电压的第一和第二电阻器。

公开(公告)号：US07737780B2

公开(公告)日：2010-06-15

申请号：US11900917

申请日：2007-09-12

申请人： Pratap N Singh ,  Chandrajit Debnath ,  Rakesh Malik ,  Arnold James D'Souza

发明人： Pratap N Singh ,  Chandrajit Debnath ,  Rakesh Malik ,  Arnold James D'Souza

IPC分类号： H03F3/45

CPC分类号： H03F3/45188 ,  H03F3/45677 ,  H03F2203/45052 ,  H03F2203/45074 ,  H03F2203/45248 ,  H03F2203/45296 ,  H03F2203/45302 ,  H03F2203/45318 ,  H03F2203/45342 ,  H03F2203/45356

摘要： Embodiments of the present invention disclose operational amplifiers which demonstrate good settling behavior with minimum over-shoot or ringing for improving settling behavior. The amplifiers include one or more amplification stages connected to form a symmetric structure. The amplification stage includes a boosting amplifier, a MOS transistor and a compensation capacitor. The MOS transistor can be an NMOS transistor and a PMOS transistor. Using this scheme pole-zero doublets are rearranged in a manner to improve the transient settling response.

摘要翻译： 本发明的实施例公开了运行放大器，其以最小的过冲或振铃来表现出良好的沉降行为，以改善沉降行为。 放大器包括一个或多个连接以形成对称结构的放大级。 放大级包括升压放大器，MOS晶体管和补偿电容器。 MOS晶体管可以是NMOS晶体管和PMOS晶体管。 使用该方案，极点双重重排以改善瞬态稳定响应的方式。

公开(公告)号：US20100013556A1

公开(公告)日：2010-01-21

申请号：US12439093

申请日：2007-08-27

申请人： Yusuke Aiba

发明人： Yusuke Aiba

IPC分类号： H03F3/45

CPC分类号： H03G1/0029 ,  H03F1/3211 ,  H03F3/45179 ,  H03F3/45183 ,  H03F3/45188 ,  H03F2203/45052 ,  H03F2203/45066 ,  H03F2203/45101 ,  H03F2203/45292 ,  H03F2203/45356 ,  H03F2203/45394 ,  H03F2203/45481 ,  H03F2203/45586 ,  H03G1/0023 ,  H03G1/04

摘要： Provided is a transconductance amplifier capable of suppressing variation in the range of a linear relationship between an input voltage and an output current depending on the magnitude of a tuning voltage Vctrl, thereby adjusting transconductance over a wider range of operating input voltages. The transconductance amplifier is configured by a differential pair formed of MOS transistors (111, 112) having a common source, MOS transistors (113, 114), amplifiers (106, 107), a voltage generator circuit (100), and a differential-pair input voltage generator circuit (120). An input differential common voltage Vcm of all differential signals inputted to the differential pair is adjusted so that a difference between Vcm and Vctrl is equal to a constant, in accordance with a change in the tuning voltage Vctrl that controls the transconductance. This enables keeping constant the range in which the transconductance amplifier can achieve good linearity.

摘要翻译： 提供了能够根据调谐电压Vctr1的大小来抑制输入电压和输出电流之间的线性关系的范围的变化的跨导放大器，由此在更宽的工作输入电压范围内调节跨导。 跨导放大器由具有公共源的MOS晶体管（111,112），MOS晶体管（113,114），放大器（106,107），电压发生器电路（100）和差分放大器构成的差分对构成， 对输入电压发生器电路（120）。 根据控制跨导的调谐电压Vctrl的变化，调整输入到差分对的所有差分信号的输入差分公共电压Vcm，使得Vcm和Vctr1之间的差等于常数。 这使得跨导放大器可以实现良好线性度的范围保持恒定。

公开(公告)号：US07256652B1

公开(公告)日：2007-08-14

申请号：US11221643

申请日：2005-09-08

申请人： Emerson S. Fang ,  Thomas J. Hirsch

发明人： Emerson S. Fang ,  Thomas J. Hirsch

IPC分类号： H03F3/45

CPC分类号： H03F3/45188 ,  H03F1/52 ,  H03F1/523 ,  H03F2200/321 ,  H03F2203/45052 ,  H03F2203/45322

摘要： A differential receiver circuit. In one embodiment, the circuit includes first and second input transistors, each having a first terminal coupled to a bias node (a first and second bias node, respectively), as well as first and second bias transistors, each having a first terminal coupled to the first and second bias nodes, respectively. The circuit further includes a first current source coupled to provide current to the first bias node and a second current source coupled to the second bias node. The differential receiver circuit is coupled to first and second, which receive first and second voltages, respectively. The first and second current sources provide current to the first and second bias nodes, respectively, such that the voltage present on the first and second bias nodes remains with approximately a threshold voltage of a midpoint between the voltages present on the first and second voltage nodes.

摘要翻译： 差分接收电路。 在一个实施例中，电路包括第一和第二输入晶体管，每个具有耦合到偏置节点（分别为第一和第二偏置节点）的第一端子以及第一和第二偏置晶体管，每个偏置晶体管具有耦合到 第一和第二偏置节点。 电路还包括耦合以向第一偏置节点提供电流的第一电流源和耦合到第二偏置节点的第二电流源。 差分接收器电路分别接收第一和第二电压，第一和第二电压分别接收第一和第二电压。 第一和第二电流源分别向第一和第二偏置节点提供电流，使得存在于第一和第二偏置节点上的电压保持在第一和第二电压节点上存在的电压之间的中点的大约阈值电压 。

公开(公告)号：US20060181349A1

公开(公告)日：2006-08-17

申请号：US11339523

申请日：2006-01-26

申请人： Jeongwook Koh ,  Hoon-tae Kim ,  Kyoung-sik Seol ,  Gyu-hyeong Cho

发明人： Jeongwook Koh ,  Hoon-tae Kim ,  Kyoung-sik Seol ,  Gyu-hyeong Cho

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F3/45188 ,  H03F3/45197 ,  H03F2203/45052 ,  H03F2203/45244 ,  H03F2203/45318 ,  H03F2203/45352 ,  H03F2203/45366 ,  H03F2203/45458 ,  H03F2203/45466 ,  H03F2203/45492 ,  H03G1/0029

摘要： Provided is a complementary metal oxide semiconductor variable gain amplifier controlling a dB linear gain and a method of controlling the dB linear gain. The complimentary metal oxide semiconductor variable gain amplifier includes: first through fourth transistors differentially receiving first and second input voltages and amplifying the first and second input voltage using a predetermined gain; fifth and sixth transistors controlling a transconductance according to a control voltage to control the predetermined gain; and first and second resistors generating an output voltage having the predetermined gain according to an output current generated by the fifth and sixth transistors.

摘要翻译： 提供了控制dB线性增益的互补金属氧化物半导体可变增益放大器和控制dB线性增益的方法。 互补金属氧化物半导体可变增益放大器包括：第一至第四晶体管，差分地接收第一和第二输入电压，并使用预定增益放大第一和第二输入电压; 第五和第六晶体管根据控制电压控制跨导以控制预定的增益; 以及根据由第五和第六晶体管产生的输出电流产生具有预定增益的输出电压的第一和第二电阻器。

公开(公告)号：US4599574A

公开(公告)日：1986-07-08

申请号：US691709

申请日：1985-01-14

申请人： William R. Chambers

发明人： William R. Chambers

IPC分类号： H03F3/45 ,  H03G3/02 ,  H03G3/30

CPC分类号： H03F3/45071 ,  H03G3/02 ,  H03F2200/261 ,  H03F2203/45021 ,  H03F2203/45024 ,  H03F2203/45048 ,  H03F2203/45052 ,  H03F2203/45178 ,  H03F2203/45188 ,  H03F2203/45221 ,  H03F2203/45356 ,  H03F2203/45466 ,  H03F2203/45471

摘要： A high accuracy selectable gain instrumentation amplifier system which avoids amplifying signal distortions produced by gain selection switches includes a high gain amplifier having an input coupled to receive a system input signal and a feedback signal and an output generating an output signal proportional to the difference therebetween, a feedback network providing a plurality of gain selection feedback paths to the amplifier input, a first switching network coupling the amplifier output to a selected feedback path and a second switching network coupling the selected feedback path to the system output. The amplifier system may be implemented in either a differential or single ended ground referenced configuration.

摘要翻译： 避免放大由增益选择开关产生的信号失真的高精度可选择增益仪表放大器系统包括具有耦合以接收系统输入信号和反馈信号的输入的高增益放大器和产生与它们之间的差异成比例的输出信号的输出， 向放大器输入提供多个增益选择反馈路径的反馈网络，将放大器输出耦合到所选择的反馈路径的第一交换网络和将所选择的反馈路径耦合到系统输出的第二交换网络。 放大器系统可以以差分或单端接地参考配置来实现。

公开(公告)号：US09455676B2

公开(公告)日：2016-09-27

申请号：US14665374

申请日：2015-03-23

申请人： MegaChips Corporation

发明人： Yuuki Nishizawa

IPC分类号： H03F1/14 ,  H03F3/45

CPC分类号： H03F3/45076 ,  H03F1/14 ,  H03F3/45192 ,  H03F3/45475 ,  H03F3/45632 ,  H03F2200/135 ,  H03F2200/153 ,  H03F2203/45052 ,  H03F2203/45264

摘要： An amplifier circuit outputs a control signal for controlling a control target circuit and receives input of a feedback signal from the control target circuit. The amplifier circuit and the control target circuit constitute a feedback loop that includes a plurality of poles. A semiconductor capacitive element is provided for phase compensation in the feedback loop. The amplifier circuit includes an output branch that includes a first transistor having a first current terminal from which the control signal is output and a second current terminal connected to a power supply potential, and a branch that is connected in parallel to the output branch and includes a cascode circuit. The cascode circuit includes a second transistor having third and fourth current terminals, and a third transistor having fifth and sixth current terminals. The fourth and fifth current terminals are connected to each other. The semiconductor capacitive element that obtains the Miller effect is connected between the control target circuit and the fourth and fifth current terminals.

摘要翻译： 放大电路输出用于控制控制对象电路的控制信号，并接收来自控制对象电路的反馈信号的输入。 放大器电路和控制对象电路构成包括多个极的反馈回路。 在反馈回路中提供半导体电容元件用于相位补偿。 放大器电路包括输出支路，该输出支路包括第一晶体管，第一晶体管具有输出控制信号的第一电流端子和连接到电源电位的第二电流端子，以及与输出支路并联连接的支路， 一个共源共享电路。 共射共振电路包括具有第三和第四电流端子的第二晶体管，以及具有第五和第六电流端子的第三晶体管。 第四和第五电流端子彼此连接。 获得米勒效应的半导体电容元件连接在控制目标电路和第四和第五电流端子之间。