中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

17 records (took 0.016 seconds)

    Differential input stage with wide input signal range and stable transconductance
    11.
    发明授权
    Differential input stage with wide input signal range and stable transconductance 有权

    公开(公告)号：US10218324B2

    公开(公告)日：2019-02-26

    申请号：US15395073

    申请日：2016-12-30

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Vadim Valerievich Ivanov ,  Srinivas K. Pulijala

    IPC: H03F3/45

    Abstract: At least some embodiments are directed to a system that comprises a differential input transistor pair (DITP) comprising first and second transistors, a first feedback loop coupled to the first transistor, and a second feedback loop coupled to the second transistor. When a differential voltage applied to the input stage is within a first range, the first and second feedback loops control a tail current supplied to the DITP, where the tail current at least partially determines a transconductance of the DITP. When the differential voltage is within a second range, the transconductance of the DITP is at least partially determined by a first resistor in the first feedback loop or by a second resistor in the second feedback loop.

    Chopper amplifier
    12.
    发明授权
    Chopper amplifier 有权

    公开(公告)号：US10931247B2

    公开(公告)日：2021-02-23

    申请号：US16357572

    申请日：2019-03-19

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Vadim Valerievich Ivanov ,  Bharath Karthik Vasan ,  Piyush Kaslikar ,  Srinivas K. Pulijala

    IPC: H03F1/02 ,  H03F3/387 ,  H03F3/19

    Abstract: A chopper amplifier circuit includes a first amplifier path, a second amplifier path, and a third amplifier path. The first amplifier path includes chopper circuitry configured to modulate an input signal and an offset voltage at a chopping frequency, and ripple reduction circuitry configured to attenuate the chopping frequency in a signal in the first amplifier path. The second amplifier path includes a feedforward gain stage, and is configured to apply higher gain to intermediate signal frequencies than is applied in the first amplifier path. The third amplifier path includes a feedforward gain stage, and is configured to apply higher gain to high signal frequencies than is applied in the first amplifier path and the second amplifier path. The intermediate signal frequencies are lower than the high signal frequencies.

    Voltage-to-current converters
    13.
    发明授权
    Voltage-to-current converters 有权

    公开(公告)号：US10511269B2

    公开(公告)日：2019-12-17

    申请号：US15995355

    申请日：2018-06-01

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Bharath Karthik Vasan ,  Srinivas K. Pulijala ,  Steven G. Brantley

    IPC: H03F1/32 ,  H03F3/45 ,  H03F3/21

    Abstract: A voltage-to-current converter that reduces third harmonic distortion. An amplifier includes an input stage. The input stage includes a first voltage-to-current conversion stage and a second voltage-to-current conversion stage. The first voltage-to-current conversion stage is configured to provide an input to output gain with compressive nonlinearity. The second voltage-to-current stage is cascaded with the first voltage-to-current conversion stage. An input of the second voltage-to-current stage is connected to an output of the first voltage-to-current conversion stage. The second voltage-to-current conversion stage is configured to provide an input to output gain with expansive nonlinearity.

Patent Agency Ranking