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    REDUCING A SETTLING TIME AFTER A SLEW CONDITION IN AN AMPLIFIER
    3.
    发明申请
    REDUCING A SETTLING TIME AFTER A SLEW CONDITION IN AN AMPLIFIER 有权
    在放大器中的一个单调的条件之后减少一个确定的时间

    公开(公告)号：US20150091647A1

    公开(公告)日：2015-04-02

    申请号：US14040856

    申请日：2013-09-30

    申请人： Texas Instruments Incorporated

    发明人： Vaibhav Kumar ,  Vadim Valerievich Ivanov

    IPC分类号： H03F3/45

    CPC分类号： H03F3/45179 ,  H03F3/45 ,  H03F3/45183 ,  H03F3/45475 ,  H03F2203/45248 ,  H03F2203/45344 ,  H03F2203/45511 ,  H03F2203/45512

    摘要： In an amplifier, a first stage receives a differential input voltage, which is formed by first and second input voltages, and outputs a first differential current in response thereto on first and second lines having respective first and second line voltages. A second stage receives the first and second line voltages and outputs a second differential current in response thereto on third and fourth lines having respective third and fourth line voltages. A third stage receives the third and fourth line voltages and outputs an output voltage in response thereto. A slew boost circuit detects a slew condition, in which a threshold difference arises between the first and second input voltages, and outputs a slew current in response thereto for maintaining a slew rate of the output voltage during the slew condition. The first stage includes circuits for reducing a variable difference between the first and second line voltages.

    摘要翻译： 在放大器中，第一级接收由第一和第二输入电压形成的差分输入电压，并且在具有相应的第一和第二线电压的第一和第二线上响应于此输出第一差分电流。 第二级接收第一和第二线电压，并在具有相应的第三和第四线电压的第三和第四线上响应于此输出第二差分电流。 第三级接收第三和第四线电压并输出响应于此的输出电压。 回转升压电路检测在第一和第二输入电压之间出现阈值差的转换条件，并且响应于此产生一个回转电流，以保持在转换条件期间输出电压的转换速率。 第一级包括用于减小第一和第二线电压之间的可变差的电路。

    Chopped operational-amplifier (OP-AMP) system
    5.
    发明授权
    Chopped operational-amplifier (OP-AMP) system 有权
    斩波运算放大器（OP-AMP）系统

    公开(公告)号：US09564859B2

    公开(公告)日：2017-02-07

    申请号：US14621110

    申请日：2015-02-12

    申请人： TEXAS INSTRUMENTS INCORPORATED

    发明人： Vadim V. Ivanov ,  Vaibhav Kumar ,  Munaf H. Shaik

    IPC分类号： H03F1/26 ,  H03F3/387 ,  H03F3/45 ,  H03F3/00

    CPC分类号： H03F1/26 ,  H03F3/005 ,  H03F3/387 ,  H03F3/45475 ,  H03F3/45968 ,  H03F2200/249 ,  H03F2200/372 ,  H03F2200/375 ,  H03F2203/45118 ,  H03F2203/45138 ,  H03F2203/45512

    摘要： One example includes an OP-AMP circuit system. The system includes a signal amplification path comprising a signal amplification path comprising a signal amplifier and an output stage. The signal amplification path can be configured to amplify an input voltage received at an input to provide an output voltage via the output stage. The system also includes an offset-reduction path coupled to the input of the signal amplification path and to an output of the signal amplifier. The offset-reduction path includes a transconductance amplifier and at least one chopper that are configured to mitigate noise in the signal amplification path and a noise-filtering feedback path configured to provide chopper feedback with respect to an offset voltage associated with the offset-reduction path, the noise-filtering feedback path comprising a feedback path input coupled to the input of the transconductance amplifier via a resistor.

    摘要翻译： 一个例子包括OP-AMP电路系统。 该系统包括信号放大路径，其包括信号放大路径，该信号放大路径包括信号放大器和输出级。 信号放大路径可以被配置为放大在输入处接收的输入电压以经由输出级提供输出电压。 该系统还包括耦合到信号放大路径的输入和信号放大器的输出的偏移减小路径。 偏移减小路径包括跨导放大器和被配置为减轻信号放大路径中的噪声的至少一个斩波器以及被配置为提供关于与偏移减小路径相关联的偏移电压的斩波反馈的噪声滤波反馈路径 噪声滤波反馈路径包括经由电阻器耦合到跨导放大器的输入的反馈路径输入。

    Reducing a settling time after a slew condition in an amplifier
    7.
    发明授权
    Reducing a settling time after a slew condition in an amplifier 有权
    在放大器中摆动条件后降低稳定时间

    公开(公告)号：US09054657B2

    公开(公告)日：2015-06-09

    申请号：US14040856

    申请日：2013-09-30

    申请人： Texas Instruments Incorporated

    发明人： Vaibhav Kumar ,  Vadim Valerievich Ivanov

    IPC分类号： H03F3/45

    CPC分类号： H03F3/45179 ,  H03F3/45 ,  H03F3/45183 ,  H03F3/45475 ,  H03F2203/45248 ,  H03F2203/45344 ,  H03F2203/45511 ,  H03F2203/45512

    摘要： In an amplifier, a first stage receives a differential input voltage, which is formed by first and second input voltages, and outputs a first differential current in response thereto on first and second lines having respective first and second line voltages. A second stage receives the first and second line voltages and outputs a second differential current in response thereto on third and fourth lines having respective third and fourth line voltages. A third stage receives the third and fourth line voltages and outputs an output voltage in response thereto. A slew boost circuit detects a slew condition, in which a threshold difference arises between the first and second input voltages, and outputs a slew current in response thereto for maintaining a slew rate of the output voltage during the slew condition. The first stage includes circuits for reducing a variable difference between the first and second line voltages.

    摘要翻译： 在放大器中，第一级接收由第一和第二输入电压形成的差分输入电压，并且在具有相应的第一和第二线电压的第一和第二线上响应于此输出第一差分电流。 第二级接收第一和第二线电压，并在具有相应的第三和第四线电压的第三和第四线上响应于此输出第二差分电流。 第三级接收第三和第四线电压并输出响应于此的输出电压。 回转升压电路检测在第一和第二输入电压之间出现阈值差的转换条件，并且响应于此产生一个回转电流，以保持在转换条件期间输出电压的转换速率。 第一级包括用于减小第一和第二线电压之间的可变差的电路。