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公开(公告)号：US09985589B2
公开(公告)日：2018-05-29
申请号：US15242203
申请日：2016-08-19
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Srinivas K. Pulijala , Steven G. Brantley , Bharath K. Vasan
CPC classification number: H03F1/3211 , G05F1/561 , H03F3/26 , H03F3/45 , H03F3/45085 , H03F3/45139 , H03F3/45183 , H03F2200/69 , H03F2203/45134 , H03F2203/45288 , H03F2203/45392 , H03F2203/45722
Abstract: A voltage-to-current converter includes a first differential pair of transistors, a second differential pair of transistors, and a first resistor. The first differential pair of transistors includes a first transistor and a second transistor. An emitter of the first transistor is directly connected to an emitter of the second transistor. The second differential pair of transistors includes a third transistor and a fourth transistor. An emitter of the third transistor is directly connected to an emitter of the fourth transistor. The first resistor is connected to the emitter of the first transistor, the emitter of the second transistor, the emitter of the third transistor, and the emitter of the fourth transistor.
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公开(公告)号：US09467096B2
公开(公告)日：2016-10-11
申请号：US14642317
申请日：2015-03-09
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Srinivas K. Pulijala , Steven G. Brantley
CPC classification number: H03F1/0266 , H03F3/211 , H03F3/4508 , H03F3/72 , H03F2200/261 , H03F2200/27 , H03F2200/411 , H03F2200/432 , H03F2203/45154 , H03F2203/45248 , H03F2203/45674 , H03F2203/45676 , H03F2203/45702
Abstract: One example includes an amplifier system. The system includes a precision amplifier portion comprising a first input stage configured to receive an input voltage and a first output stage configured to generate an output voltage at the first output stage based on the input voltage. The system also includes a slew amplifier portion arranged in parallel with the precision amplifier portion and comprising a second input stage that receives the input voltage and a second output stage. The slew amplifier portion can be activated in response to a detected slew condition associated with the input voltage to generate the output voltage based on the input voltage.
Abstract translation: 一个例子包括放大器系统。 该系统包括精密放大器部分，其包括被配置为接收输入电压的第一输入级和被配置为基于输入电压在第一输出级产生输出电压的第一输出级。 该系统还包括与精密放大器部分并联设置并包括接收输入电压的第二输入级和第二输出级的转换放大器部分。 可以响应于与输入电压相关联的检测到的转换条件来激活转换放大器部分，以基于输入电压产生输出电压。
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公开(公告)号：US11742811B2
公开(公告)日：2023-08-29
申请号：US17094847
申请日：2020-11-11
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Vadim Valerievich Ivanov , Srinivas K. Pulijala
IPC: H03F3/45
CPC classification number: H03F3/45179 , H03F2200/375 , H03F2203/45042 , H03F2203/45044 , H03F2203/45212
Abstract: An integrated circuit (IC) includes first, second, third, and fourth transistors, first and second current source devices, and a trim circuit. The first transistor has a first control input and a first current terminal. The second transistor has a second control input and a second current terminal. The third transistor had a third control input and third and fourth current terminals. The fourth transistor has a fourth control input and fifth and sixth current terminals. The first current source is coupled between a first power supply node and the third current terminal. The second current source is coupled between the first supply node and the fifth current terminal. The trim circuit is coupled between the fourth current terminal and a second power supply node, and is coupled between the sixth current terminal and the second power supply node. The trim circuit includes a resistive digital-to-analog converter (RDAC) circuit.
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公开(公告)号：US10073478B1
公开(公告)日：2018-09-11
申请号：US15727779
申请日：2017-10-09
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Vadim Valerievich Ivanov , Srinivas K. Pulijala , Siva Kumar Sudani
Abstract: A voltage regulator includes a first transistor including a first terminal to receive an input voltage and a second transistor including a first terminal coupled to a second terminal of the first transistor. A charge pump couples to the second transistor and to an output voltage node. An amplifier receives a feedback voltage derived from the output voltage and generates a control signal to gates of the transistors. Responsive to the input voltage being more than a threshold larger than the output voltage, the amplifier maintains the second transistor off and the first transistor on such that current flows through the first transistor to the output voltage node but not the second transistor. Responsive to the input voltage being less than the threshold amount, the amplifier operates the first transistor in a triode mode and turns on the second transistor to provide current to the charge pump.
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公开(公告)号：US09912294B2
公开(公告)日：2018-03-06
申请号：US15419014
申请日：2017-01-30
Applicant: Texas Instruments Incorporated
Inventor： Srinivas K. Pulijala , Steven G. Brantley
CPC classification number: H03F1/02 , H03F1/14 , H03F3/20 , H03F2200/135 , H03F2200/153 , H03F2200/171 , H03F2200/297 , H03F2200/408
Abstract: An amplifier includes an amplifier input and an amplifier output. A compensation network is coupled to the amplifier output. The compensation network includes at least one RC network tuned to a frequency in which the amplifier operates. The compensation network provides at least one zero to compensate for at least one pole introduced by a load coupled to the amplifier output.
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Patent Agency Ranking
公开(公告)号：US20190107857A1
公开(公告)日：2019-04-11
申请号：US16058022
申请日：2018-08-08
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Vadim Valerievich Ivanov , Srinivas K. Pulijala , Siva Kumar Sudani
Abstract: A voltage regulator includes a first transistor including a first terminal to receive an input voltage and a second transistor including a first terminal coupled to a second terminal of the first transistor. A charge pump couples to the second transistor and to an output voltage node. An amplifier receives a feedback voltage derived from the output voltage and generates a control signal to gates of the transistors. Responsive to the input voltage being more than a threshold larger than the output voltage, the amplifier maintains the second transistor off and the first transistor on such that current flows through the first transistor to the output voltage node but not the second transistor. Responsive to the input voltage being less than the threshold amount, the amplifier operates the first transistor in a triode mode and turns on the second transistor to provide current to the charge pump.
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公开(公告)号：US10193501B2
公开(公告)日：2019-01-29
申请号：US15876561
申请日：2018-01-22
Applicant: Texas Instruments Incorporated
Inventor： Srinivas K. Pulijala , Steven G. Brantley
Abstract: An amplifier includes an amplifier input and an amplifier output. A compensation network is coupled to the amplifier output. The compensation network includes at least one RC network tuned to a frequency in which the amplifier operates. The compensation network provides at least one zero to compensate for at least one pole introduced by a load coupled to the amplifier output.
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公开(公告)号：US20170141733A1
公开(公告)日：2017-05-18
申请号：US15419014
申请日：2017-01-30
Applicant: Texas Instruments Incorporated
Inventor： Srinivas K. Pulijala , Steven G. Brantley
CPC classification number: H03F1/02 , H03F1/14 , H03F3/20 , H03F2200/135 , H03F2200/153 , H03F2200/171 , H03F2200/297 , H03F2200/408
Abstract: An amplifier includes an amplifier input and an amplifier output. A compensation network is coupled to the amplifier output. The compensation network includes at least one RC network tuned to a frequency in which the amplifier operates. The compensation network provides at least one zero to compensate for at least one pole introduced by a load coupled to the amplifier output.
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公开(公告)号：US10756685B2
公开(公告)日：2020-08-25
申请号：US16221473
申请日：2018-12-15
Applicant: TEXAS INSTRUMENTS INCORPORATED
Abstract: A chopper amplifier circuit includes a first amplifier path with chopper circuitry, a switched-capacitor filter, and multiple gain stages. The chopper amplifier circuit also includes a second amplifier path with a feed-forward gain stage. A chopping frequency of the chopper circuitry is greater than a threshold frequency at which the second amplifier path is used instead of the first amplifier path.
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公开(公告)号：US10560064B2
公开(公告)日：2020-02-11
申请号：US16555206
申请日：2019-08-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Steven G. Brantley , Bharath Karthik Vasan , Srinivas K. Pulijala , Martijn Snoeij
Abstract: In examples, a system comprises a differential amplifier coupled to a parasitic capacitor positioned between a first node and a first reference voltage source. The system comprises a buffer amplifier having an input terminal and an output terminal, the input terminal coupled to the first node and the output terminal coupled to a cancellation capacitor. The system includes a controlled current source coupled to the first node and the input terminal, the controlled current source coupled to a second reference voltage source. The system comprises a current sense circuit coupled to the cancellation capacitor and the second reference voltage source.
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