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1.发明申请COMPENSATION TECHNIQUE FOR AMPLIFIERS IN A CURRENT SENSING CIRCUIT FOR A BATTERY 有权用于电池的电流感测电路中的放大器的补偿技术公开(公告)号：US20150192642A1
公开(公告)日：2015-07-09
申请号：US14149739
申请日：2014-01-07
Applicant: QUALCOMM Incorporated
Inventor： Aniruddha Bashar
CPC classification number: G01R31/3624 , G01R19/0046 , G01R19/32 , G01R31/3655 , H03F3/45179 , H03F3/45475 , H03F2203/45048 , H03F2203/45138
Abstract: In one embodiment, a circuit includes a first amplifier having a first differential input, a second differential input, and an output. The replica device is configured to generate a replica current of a current flowing through the battery where the first amplifier controls the control device to control the replica current. The circuit also includes a second amplifier having a third differential input, a fourth differential input, and an output. The second amplifier is configured to compensate for a first offset error of the first amplifier and a second offset error of the second amplifier based on selectively coupling the third differential input to the output of the first amplifier during a first phase, selectively coupling the output of the second amplifier to the second differential input during the first phase, and selectively coupling the output of the second amplifier to the fourth differential input during a second phase.
Abstract translation: 在一个实施例中，电路包括具有第一差分输入，第二差分输入和输出的第一放大器。 复制设备被配置为产生流过电池的电流的复制电流，其中第一放大器控制控制装置以控制副本电流。 电路还包括具有第三差分输入，第四差分输入和输出的第二放大器。 第二放大器被配置为基于在第一阶段期间选择性地将第三差分输入耦合到第一放大器的输出，来补偿第一放大器的第一偏移误差和第二放大器的第二偏移误差， 所述第二放大器在所述第一阶段期间到所述第二差分输入，以及在第二阶段期间选择性地将所述第二放大器的输出耦合到所述第四差分输入。
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2.发明授权Compensation technique for amplifiers in a current sensing circuit for a battery 有权电池电流检测电路放大器的补偿技术公开(公告)号：US09217780B2
公开(公告)日：2015-12-22
申请号：US14149739
申请日：2014-01-07
Applicant: QUALCOMM Incorporated
Inventor： Aniruddha Bashar
CPC classification number: G01R31/3624 , G01R19/0046 , G01R19/32 , G01R31/3655 , H03F3/45179 , H03F3/45475 , H03F2203/45048 , H03F2203/45138
Abstract: In one embodiment, a circuit includes a first amplifier having a first differential input, a second differential input, and an output. The replica device is configured to generate a replica current of a current flowing through the battery where the first amplifier controls the control device to control the replica current. The circuit also includes a second amplifier having a third differential input, a fourth differential input, and an output. The second amplifier is configured to compensate for a first offset error of the first amplifier and a second offset error of the second amplifier based on selectively coupling the third differential input to the output of the first amplifier during a first phase, selectively coupling the output of the second amplifier to the second differential input during the first phase, and selectively coupling the output of the second amplifier to the fourth differential input during a second phase.
Abstract translation: 在一个实施例中，电路包括具有第一差分输入，第二差分输入和输出的第一放大器。 复制设备被配置为产生流过电池的电流的复制电流，其中第一放大器控制控制装置以控制副本电流。 电路还包括具有第三差分输入，第四差分输入和输出的第二放大器。 第二放大器被配置为基于在第一阶段期间选择性地将第三差分输入耦合到第一放大器的输出，来补偿第一放大器的第一偏移误差和第二放大器的第二偏移误差， 所述第二放大器在所述第一阶段期间到所述第二差分输入，以及在第二阶段期间选择性地将所述第二放大器的输出耦合到所述第四差分输入。
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公开(公告)号：US10439597B1
公开(公告)日：2019-10-08
申请号：US15953157
申请日：2018-04-13
Applicant: Qualcomm Incorporated
Inventor： Guolei Yu , Ajay Kumar Kosaraju , Charles Tuten , Marko Koski , Aniruddha Bashar
Abstract: The present disclosure provides a duty locked loop circuit that includes a switch network including a first electronic switch device controlled by a first control signal that is based on a first input signal and a second electronic switch device controlled by a second control signal that is based on a second input signal. The duty locked loop circuit includes an integrator circuit electrically connected to the switch network. The integrator circuit is configured to generate an output voltage proportional to an integral of a difference between a first duty cycle of the first input signal and a second duty cycle of the second input signal. The duty locked loop circuit includes an output circuit configured to generate an output signal having an output duty cycle that is based on the output voltage.
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公开(公告)号：US10305458B1
公开(公告)日：2019-05-28
申请号：US15937686
申请日：2018-03-27
Applicant: QUALCOMM Incorporated
Inventor： Charles Derrick Tuten , Aniruddha Bashar
Abstract: Certain aspects of the present disclosure provide an apparatus for noise cancellation. One example apparatus generally includes a first delay path and a second delay path, each providing signals generated by applying a different delay to an input signal, and a first comparator having a first input coupled to the first delay path and a second input coupled to the second delay path. The apparatus also includes a switching circuit having a control input coupled to an output of the first comparator, the switching circuit configured to selectively couple the first delay path or the second delay path to an output node of the switching circuit based on a signal at the control input. The apparatus also includes an attenuation circuit having a first input coupled to an input path for providing the input signal, and a second input coupled to the output node of the switching circuit.
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