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公开(公告)号：US09973161B2
公开(公告)日：2018-05-15
申请号：US15489187
申请日：2017-04-17
Applicant: Texas Instruments Incorporated
Inventor： Vadim V. Ivanov , Vaibhav Kumar , Munaf H. Shaik
CPC classification number: H03F3/68 , H03F1/086 , H03F1/14 , H03F1/3211 , H03F1/3223 , H03F3/211 , H03F3/45183 , H03F3/45475 , H03F3/45959 , H03F3/45986 , H03F3/72 , H03F2200/135 , H03F2200/156 , H03F2200/405 , H03F2200/459 , H03F2200/78 , H03F2201/3218 , H03F2203/45026 , H03F2203/45366 , H03F2203/45424 , H03F2203/45434 , H03F2203/45528 , H03F2203/45544 , H03F2203/45548 , H03F2203/45594 , H03F2203/45614 , H03F2203/45616 , H03F2203/45636 , H03F2203/45674 , H03F2203/45724 , H03F2203/45726 , H03F2203/7206
Abstract: Described examples include multistage amplifier circuits having first and second forward circuits, a comparator or sensor circuit coupled to sense a signal in the second forward circuit to identify nonlinear operation or slewing conditions in the multistage amplifier circuit, and one or more sample hold circuits operative according to a sensor circuit output signal to selectively maintain the amplitude of an amplifier input signal in the second forward circuit and/or in a feedback circuit in response to the sensor circuit output signal indicating nonlinear operation or slewing conditions in the multistage amplifier circuit. Certain examples further include a clamping circuit operative to selectively maintain a voltage at a terminal of a Miller compensation capacitance responsive to the comparator output signal indicating nonlinear operation or slewing conditions.
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公开(公告)号：US20170222610A1
公开(公告)日：2017-08-03
申请号：US15489187
申请日：2017-04-17
Applicant: Texas Instruments Incorporated
Inventor： Vadim V. Ivanov , Vaibhav Kumar , Munaf H. Shaik
CPC classification number: H03F3/68 , H03F1/086 , H03F1/14 , H03F1/3211 , H03F1/3223 , H03F3/211 , H03F3/45183 , H03F3/45475 , H03F3/45959 , H03F3/45986 , H03F3/72 , H03F2200/135 , H03F2200/156 , H03F2200/405 , H03F2200/459 , H03F2200/78 , H03F2201/3218 , H03F2203/45026 , H03F2203/45366 , H03F2203/45424 , H03F2203/45434 , H03F2203/45528 , H03F2203/45544 , H03F2203/45548 , H03F2203/45594 , H03F2203/45614 , H03F2203/45616 , H03F2203/45636 , H03F2203/45674 , H03F2203/45724 , H03F2203/45726 , H03F2203/7206
Abstract: Described examples include multistage amplifier circuits having first and second forward circuits, a comparator or sensor circuit coupled to sense a signal in the second forward circuit to identify nonlinear operation or slewing conditions in the multistage amplifier circuit, and one or more sample hold circuits operative according to a sensor circuit output signal to selectively maintain the amplitude of an amplifier input signal in the second forward circuit and/or in a feedback circuit in response to the sensor circuit output signal indicating nonlinear operation or slewing conditions in the multistage amplifier circuit. Certain examples further include a clamping circuit operative to selectively maintain a voltage at a terminal of a Miller compensation capacitance responsive to the comparator output signal indicating nonlinear operation or slewing conditions.
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Patent Agency Ranking
公开(公告)号：US20150091647A1
公开(公告)日：2015-04-02
申请号：US14040856
申请日：2013-09-30
Applicant: Texas Instruments Incorporated
Inventor： Vaibhav Kumar , Vadim Valerievich Ivanov
IPC: H03F3/45
CPC classification number: H03F3/45179 , H03F3/45 , H03F3/45183 , H03F3/45475 , H03F2203/45248 , H03F2203/45344 , H03F2203/45511 , H03F2203/45512
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US09634617B2
公开(公告)日：2017-04-25
申请号：US14790592
申请日：2015-07-02
Applicant: Texas Instruments Incorporated
Inventor： Vadim V. Ivanov , Vaibhav Kumar , Munaf H. Shaik
CPC classification number: H03F3/68 , H03F1/086 , H03F1/14 , H03F1/3211 , H03F1/3223 , H03F3/211 , H03F3/45183 , H03F3/45475 , H03F3/45959 , H03F3/45986 , H03F3/72 , H03F2200/135 , H03F2200/156 , H03F2200/405 , H03F2200/459 , H03F2200/78 , H03F2201/3218 , H03F2203/45026 , H03F2203/45366 , H03F2203/45424 , H03F2203/45434 , H03F2203/45528 , H03F2203/45544 , H03F2203/45548 , H03F2203/45594 , H03F2203/45614 , H03F2203/45616 , H03F2203/45636 , H03F2203/45674 , H03F2203/45724 , H03F2203/45726 , H03F2203/7206
Abstract: Described examples include multistage amplifier circuits having first and second forward circuits, a comparator or sensor circuit coupled to sense a signal in the second forward circuit to identify nonlinear operation or slewing conditions in the multistage amplifier circuit, and one or more sample hold circuits operative according to a sensor circuit output signal to selectively maintain the amplitude of an amplifier input signal in the second forward circuit and/or in a feedback circuit in response to the sensor circuit output signal indicating nonlinear operation or slewing conditions in the multistage amplifier circuit. Certain examples further include a clamping circuit operative to selectively maintain a voltage at a terminal of a Miller compensation capacitance responsive to the comparator output signal indicating nonlinear operation or slewing conditions.
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公开(公告)号：US09564859B2
公开(公告)日：2017-02-07
申请号：US14621110
申请日：2015-02-12
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Vadim V. Ivanov , Vaibhav Kumar , Munaf H. Shaik
CPC classification number: H03F1/26 , H03F3/005 , H03F3/387 , H03F3/45475 , H03F3/45968 , H03F2200/249 , H03F2200/372 , H03F2200/375 , H03F2203/45118 , H03F2203/45138 , H03F2203/45512
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US20160006403A1
公开(公告)日：2016-01-07
申请号：US14790592
申请日：2015-07-02
Applicant: Texas Instruments Incorporated
Inventor： Vadim V. Ivanov , Vaibhav Kumar , Munaf H. Shaik
CPC classification number: H03F3/68 , H03F1/086 , H03F1/14 , H03F1/3211 , H03F1/3223 , H03F3/211 , H03F3/45183 , H03F3/45475 , H03F3/45959 , H03F3/45986 , H03F3/72 , H03F2200/135 , H03F2200/156 , H03F2200/405 , H03F2200/459 , H03F2200/78 , H03F2201/3218 , H03F2203/45026 , H03F2203/45366 , H03F2203/45424 , H03F2203/45434 , H03F2203/45528 , H03F2203/45544 , H03F2203/45548 , H03F2203/45594 , H03F2203/45614 , H03F2203/45616 , H03F2203/45636 , H03F2203/45674 , H03F2203/45724 , H03F2203/45726 , H03F2203/7206
Abstract: Described examples include multistage amplifier circuits having first and second forward circuits, a comparator or sensor circuit coupled to sense a signal in the second forward circuit to identify nonlinear operation or slewing conditions in the multistage amplifier circuit, and one or more sample hold circuits operative according to a sensor circuit output signal to selectively maintain the amplitude of an amplifier input signal in the second forward circuit and/or in a feedback circuit in response to the sensor circuit output signal indicating nonlinear operation or slewing conditions in the multistage amplifier circuit. Certain examples further include a clamping circuit operative to selectively maintain a voltage at a terminal of a Miller compensation capacitance responsive to the comparator output signal indicating nonlinear operation or slewing conditions.
Abstract translation: 所描述的示例包括具有第一和第二正向电路的多级放大器电路，耦合以感测第二正向电路中的信号的比较器或传感器电路，以识别多级放大器电路中的非线性操作或回转状态，以及一个或多个采样保持电路 传感器电路输出信号，以响应于指示多级放大器电路中的非线性操作或回转状态的传感器电路输出信号选择性地保持第二正向电路中和/或反馈电路中的放大器输入信号的幅度。 某些示例还包括一个钳位电路，其可操作以响应于指示非线性操作或回转条件的比较器输出信号选择性地维持米勒补偿电容的端子处的电压。
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公开(公告)号：US09054657B2
公开(公告)日：2015-06-09
申请号：US14040856
申请日：2013-09-30
Applicant: Texas Instruments Incorporated
Inventor： Vaibhav Kumar , Vadim Valerievich Ivanov
IPC: H03F3/45
CPC classification number: H03F3/45179 , H03F3/45 , H03F3/45183 , H03F3/45475 , H03F2203/45248 , H03F2203/45344 , H03F2203/45511 , H03F2203/45512
Abstract: 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.
Abstract translation: 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。
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