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75 条记录 (耗时 0.019 秒)

    Low-power inverter-based differential amplifier
    3.
    发明授权
    Low-power inverter-based differential amplifier 有权
    低功耗基于逆变器的差分放大器

    公开(公告)号：US08928406B2

    公开(公告)日：2015-01-06

    申请号：US13845469

    申请日：2013-03-18

    申请人： Texas Instruments Incorporated

    发明人： Xavier Albinet

    IPC分类号： H03F3/45

    CPC分类号： H03F3/45636 ,  H03F2203/45134

    摘要： A new inverter-based fully-differential amplifier is provided including one or more common-mode feedback transistors coupled to each inverter, which transistors operate in the liner region. Accordingly, due to the fully-differential nature of the new inverter-based fully-differential amplifier, the amplifier provides an improved Power Supply Rejection Ratio (PSRR), provides a reduced sensitivity to supply voltage and process or part variations, and does not require an auto-zeroing technique to be utilized, which ultimately saves power, all while utilizing the low-voltage and low-power advantages of an inverter-based design.

    摘要翻译： 提供了一种新的基于逆变器的全差分放大器，其包括耦合到每个反相器的一个或多个共模反馈晶体管，该晶体管在衬里区域中工作。 因此，由于新型基于逆变器的全差分放大器的全差分特性，放大器提供了改进的电源抑制比（PSRR），可降低对电源电压和工艺或零件变化的灵敏度，并且不需要 采用自动归零技术，最终节省功耗，同时利用基于逆变器的设计的低电压和低功耗优势。

    Bandpass filter circuit, band-elimination filter circuit, infrared signal processing circuit
    5.
    发明授权
    Bandpass filter circuit, band-elimination filter circuit, infrared signal processing circuit 有权
    带通滤波电路，消除滤波电路，红外信号处理电路

    公开(公告)号：US07865087B2

    公开(公告)日：2011-01-04

    申请号：US11929805

    申请日：2007-10-30

    申请人： Takahiro Inoue

    发明人： Takahiro Inoue

    IPC分类号： H04B10/06 ,  H03B1/00

    CPC分类号： H03H11/0455 ,  H03F3/087 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45636 ,  H03F3/45932 ,  H03F2203/45101 ,  H03F2203/45138 ,  H03H11/0433 ,  H03H11/0472 ,  H03K3/0231 ,  H03K3/0322 ,  H03K2005/00071 ,  H03K2005/00208

    摘要： A bandpass filter circuit 10 of the present invention includes: transconductance amplifier circuits 1 to 3; a common-mode feedback circuit 4 which outputs a first control signal to the transconductance amplifier circuit 1 so that a D.C. voltage level of a differential output of the transconductance amplifier circuit 1 is at a predetermined level; a common-mode feedback circuit 5 which outputs a second control signal to the transconductance amplifier circuit 2 so that a D.C. voltage level of a differential output of the transconductance amplifier circuit 2 is at a predetermined level; and capacitors C1 to C3. Each of the members are connected as shown in FIG. 1. With the configuration, a bandpass filter circuit capable of adjusting constants such as a Q-value is realized.

    摘要翻译： 本发明的带通滤波器电路10包括：跨导放大器电路1至3; 共模反馈电路4，其向跨导放大器电路1输出第一控制信号，使得跨导放大器电路1的差分输出的直流电压电平处于预定电平; 输出第二控制信号到跨导放大器电路2的共模反馈电路5，使得跨导放大器电路2的差分输出的直流电压电平处于预定电平; 和电容器C1〜C3。 每个构件如图1所示连接。 通过该结构，实现了能够调整诸如Q值的常数的带通滤波器电路。

    Resistively loaded single stage differential amplifier having zero volt common mode input
    6.
    发明授权
    Resistively loaded single stage differential amplifier having zero volt common mode input 有权
    具有零伏共模输入的电阻式单级差分放大器

    公开(公告)号：US07605658B2

    公开(公告)日：2009-10-20

    申请号：US11849122

    申请日：2007-08-31

    申请人： Scott Meninger

    发明人： Scott Meninger

    IPC分类号： H03F3/45

    CPC分类号： H03F3/45183 ,  H03F3/45179 ,  H03F3/45192 ,  H03F3/45636 ,  H03F3/45744 ,  H03F2203/45008 ,  H03F2203/45134 ,  H03F2203/45306 ,  H03F2203/45384 ,  H03F2203/45392 ,  H03F2203/45544

    摘要： A resistively folded single stage differential amplifier capable of accommodating a low input common mode without impacting the performance of a bias current source, while also providing a high input impedance to allow for the use of the linear termination resistors. The differential amplifier provides an amplified output signal with a common mode referenced to an upper bound of an input power supply. The differential amplifier includes an input sub-stage and a transistor sub-stage resistively folding the input sub-stage.

    摘要翻译： 一种电阻折叠的单级差分放大器，其能够适应低输入共模而不影响偏置电流源的性能，同时还提供高输入阻抗以允许使用线性终端电阻。 差分放大器提供以与输入电源的上限为基准的共模的放大输出信号。 差分放大器包括输入子级和晶体管子级，电阻地折叠输入子级。

    Method for nullifying temperature dependence and circuit therefor
    7.
    发明授权
    Method for nullifying temperature dependence and circuit therefor 有权
    使温度依赖性和电路无效的方法

    公开(公告)号：US07307476B2

    公开(公告)日：2007-12-11

    申请号：US11357878

    申请日：2006-02-17

    申请人： Senpeng Sheng ,  John D. Stone

    发明人： Senpeng Sheng ,  John D. Stone

    IPC分类号： H03F3/45

    CPC分类号： H03F3/45188 ,  H03F1/301 ,  H03F3/45636 ,  H03F2200/78 ,  H03F2203/45054 ,  H03F2203/45244 ,  H03F2203/45286 ,  H03F2203/45308 ,  H03F2203/45318 ,  H03F2203/45342 ,  H03F2203/45456

    摘要： A circuit and a method for nullifying temperature dependence of a circuit characteristic. The circuit includes a plurality of transistors configured such that they generate a gate voltage that includes a threshold voltage as a component. The gate voltage is applied to a transistor to generate a current that is proportional to a process transconductance parameter. The current is applied to a comparator having a differential pair of transistors, wherein each transistor has a process transconductance parameter. The circuit takes the ratios of the process transconductance parameter associated with the current to that of each transistor of the differential pair. By rationing the process transconductance parameters, temperature dependence is nullified or negated. The ratios can be used to set the hysteresis voltage of the comparator.

    摘要翻译： 一种用于使电路特性的温度依赖性无效的电路和方法。 电路包括多个晶体管，其被配置为使得它们产生包括作为分量的阈值电压的栅极电压。 栅极电压被施加到晶体管以产生与工艺跨导参数成比例的电流。 电流被施加到具有差分晶体管对的比较器，其中每个晶体管具有工艺跨导参数。 该电路获得与电流相关的工艺跨导参数与差分对的每个晶体管的比值。 通过配制工艺跨导参数，温度依赖性无效或否定。 这些比率可用于设置比较器的滞后电压。

    Gain enhancement technique for operational amplifiers
    8.
    发明授权
    Gain enhancement technique for operational amplifiers 失效
    运算放大器增益增强技术

    公开(公告)号：US5442318A

    公开(公告)日：1995-08-15

    申请号：US138176

    申请日：1993-10-15

    申请人： Rajeev Badyal ,  Shao F. Shu

    发明人： Rajeev Badyal ,  Shao F. Shu

    IPC分类号： H03F1/26 ,  H03F3/45

    CPC分类号： H03F3/45179 ,  H03F3/45192 ,  H03F3/45636 ,  H03F3/45659 ,  H03F2203/45028 ,  H03F2203/45122 ,  H03F2203/45174 ,  H03F2203/45184 ,  H03F2203/45462 ,  H03F2203/45641 ,  H03F2203/45651

    摘要： A folded cascode operational amplifier using an improved gain enhancement technique is described. The folded cascode includes an input section, a cascode current mirror section, and a cascode current section. A first fully-differential operational amplifier is coupled to the cascode current mirror section to provide improved gain enhancement thereto and a second fully-differential operational amplifier is coupled to the cascode current source section to provide improved gain enhancement thereto. The differential inputs of the first fully-differential operational amplifier are coupled to feedback nodes of the cascode current mirror section and the differential outputs of the first fully-differential operational amplifier are coupled to control nodes of the cascode current mirror section. The differential inputs of the second fully-differential operational amplifier are coupled to feedback nodes of the cascode current source section and the differential outputs of the second fully-differential operational amplifier are coupled to control nodes of the cascode current mirror section. Coupling the feedback nodes of both current sources to a single fully-differential operational amplifier increases the common mode noise rejection of the corresponding section.

    摘要翻译： 描述了使用改进的增益增强技术的折叠共源共栅运算放大器。 折叠共源共栅包括输入部分，共源共栅电流镜部分和共源共栅电流部分。 第一全差分运算放大器耦合到共源共栅电流镜部分以提供改进的增益增益，并且第二全差分运算放大器耦合到共源共栅电流源部分以提供改进的增益增益。 第一全差分运算放大器的差分输入耦合到共源共栅电流镜部分的反馈节点，并且第一全差分运算放大器的差分输出耦合到共源共栅电流镜部分的控制节点。 第二全差分运算放大器的差分输入耦合到共源共栅电流源部分的反馈节点，并且第二全差分运算放大器的差分输出耦合到共源共栅电流镜部分的控制节点。 将两个电流源的反馈节点耦合到单个全差分运算放大器会增加相应部分的共模噪声抑制。

    Differential amplifier circuit, reception circuit, and semiconductor integrated circuit
    9.
    发明授权
    Differential amplifier circuit, reception circuit, and semiconductor integrated circuit 有权

    公开(公告)号：US12113494B2

    公开(公告)日：2024-10-08

    申请号：US17836709

    申请日：2022-06-09

    申请人： Socionext Inc.

    发明人： Takuya Fujimura ,  Hideki Kano

    IPC分类号： H03F3/45 ,  H04L25/03

    CPC分类号： H03F3/45179 ,  H03F3/45636 ,  H04L25/03146 ,  H03F2200/453

    摘要： In a differential amplifier circuit, a differential amplifier circuit unit includes: first and second transistors provided between a current source circuit and a load circuit, which receives differential input signals at gates to generate differential output signals at drains; and a third transistor connected between sources of the first and second transistors, which receives a control signal at a gate. A replica amplifier circuit unit includes: a voltage generation circuit which generates first and second reference voltages; first and second replica transistors which receives the first and second reference voltages at gates to generate replica output signals at drains; a third replica transistor connected between sources of the first and second replica transistors, which receives the control signal at a gate; and an operational amplifier which generates the control signal according to a difference between at least one of the first and second reference voltages and the replica output signal.