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    Analog-digital converter and operating method thereof
    1.
    发明授权
    Analog-digital converter and operating method thereof 有权

    公开(公告)号：US11736115B2

    公开(公告)日：2023-08-22

    申请号：US17560400

    申请日：2021-12-23

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Youngsea Cho ,  Wan Kim ,  Jiseon Paek ,  Seunghyun Oh

    IPC: H03M1/12 ,  H03M1/46

    CPC classification number: H03M1/466 ,  H03M1/1245

    Abstract: Provided are an analog-to-digital converter and/or an operating method thereof. The analog-to-digital converter includes a sample/hold circuit, a digital-to-analog converter, a comparing circuit, and a control logic circuit, wherein the digital-to-analog converter includes a first capacitor connected to a first comparison node and a first filtering node, a first reference voltage switch connected to the first filtering node and connected to a first delivery node or a first transmission node, a first pre-charge switch connected to the first filtering node or the first delivery node, and a first pre-charge capacitor connected to the first pre-charge switch and a ground voltage.

    CURRENT STEERING DIGITAL-TO-ANALOG CONVERTER AND INTEGRATED CIRCUIT INCLUDING THE SAME
    2.
    发明申请
    CURRENT STEERING DIGITAL-TO-ANALOG CONVERTER AND INTEGRATED CIRCUIT INCLUDING THE SAME 有权

    公开(公告)号：US20220368337A1

    公开(公告)日：2022-11-17

    申请号：US17673127

    申请日：2022-02-16

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Youngsea CHO ,  Wan Kim ,  Jiseon Paek ,  Seunghyun Oh

    IPC: H03M1/06

    Abstract: A current steering digital-to-analog converter includes a plurality of current cells each including a current source circuit and a current switch circuit to selectively output a current in response to a first input signal corresponding to a digital signal; a dummy current cell including a dummy current source circuit and a dummy current switch circuit to output a current in response to a second input signal; and a current switch bias circuit coupled to the dummy current cell to track a first voltage of an internal node of the dummy current source circuit and configured to generate a first bias voltage applied to the current switch circuit.

    Comparator providing offset calibration and integrated circuit including comparator
    3.
    发明授权
    Comparator providing offset calibration and integrated circuit including comparator 有权

    公开(公告)号：US11183997B2

    公开(公告)日：2021-11-23

    申请号：US16855593

    申请日：2020-04-22

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Jaehoon Lee ,  Yong Lim ,  Wan Kim ,  Barosaim Sung ,  Seunghyun Oh

    IPC: H03K5/22 ,  H03K5/24 ,  H03M1/10

    Abstract: A comparator configured to calibrate an offset according to a control signal, including an input circuit configured to receive a first input signal and a second input signal, and to generate a first internal signal corresponding to the first input signal and a second internal signal corresponding to the second input signal; a differential amplification circuit configured to consume a supply current flowing from a positive voltage node having a positive supply voltage to a negative voltage node having a negative supply voltage, and to generate an output signal by amplifying a difference between the first internal signal and the second internal signal; and a current valve configured to adjust at least a portion of the supply current based on the control signal.

    Analog digital converter and method for analog to digital converting in the analog digital converter
    4.
    发明授权
    Analog digital converter and method for analog to digital converting in the analog digital converter 有权

    公开(公告)号：US12224766B2

    公开(公告)日：2025-02-11

    申请号：US18057969

    申请日：2022-11-22

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Young Sea Cho ,  Wan Kim ,  Yong Lim

    IPC: H03M1/38 ,  H03M1/12 ,  H03M1/06 ,  H03M1/46 ,  H03M1/66

    Abstract: An analog-to-digital converter is provided. An analog-to-digital converter includes a comparator including a first input node receiving an output of a plurality of first unit capacitors and a second input node receiving an output of a plurality of second unit capacitors, a control logic configured to output first and second control signals on the basis of an output signal of the comparator, and a reference voltage adjustment circuit configured to adjust an output voltage provided to the comparator on the basis of the first and second control signals. The reference voltage adjustment circuit comprises a first pull-up circuit configured to apply a first reference voltage to each of the plurality of first unit capacitors and a first pull-down circuit configured to apply a second reference voltage to each of the plurality of second unit capacitors, based on v.

    Current steering digital-to-analog converter and integrated circuit including the same
    5.
    发明授权
    Current steering digital-to-analog converter and integrated circuit including the same 有权

    公开(公告)号：US12224760B2

    公开(公告)日：2025-02-11

    申请号：US18422192

    申请日：2024-01-25

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Youngsea Cho ,  Wan Kim ,  Jiseon Paek ,  Seunghyun Oh

    IPC: H03M1/38 ,  H03M1/06 ,  H03M1/66

    Abstract: A current steering digital-to-analog converter includes a plurality of current cells each including a current source circuit and a current switch circuit to selectively output a current in response to a first input signal corresponding to a digital signal; a dummy current cell including a dummy current source circuit and a dummy current switch circuit to output a current in response to a second input signal; and a current switch bias circuit coupled to the dummy current cell to track a first voltage of an internal node of the dummy current source circuit and configured to generate a first bias voltage applied to the current switch circuit.

    COMPARATOR PROVIDING OFFSET CALIBRATION AND INTEGRATED CIRCUIT INCLUDING COMPARATOR
    7.
    发明申请
    COMPARATOR PROVIDING OFFSET CALIBRATION AND INTEGRATED CIRCUIT INCLUDING COMPARATOR 有权

    公开(公告)号：US20210067150A1

    公开(公告)日：2021-03-04

    申请号：US16855593

    申请日：2020-04-22

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Jaehoon Lee ,  Yong Lim ,  Wan Kim ,  Barosaim Sung ,  Seunghyun Oh

    IPC: H03K5/24 ,  H03M1/10

    Abstract: A comparator configured to calibrate an offset according to a control signal, including an input circuit configured to receive a first input signal and a second input signal, and to generate a first internal signal corresponding to the first input signal and a second internal signal corresponding to the second input signal; a differential amplification circuit configured to consume a supply current flowing from a positive voltage node having a positive supply voltage to a negative voltage node having a negative supply voltage, and to generate an output signal by amplifying a difference between the first internal signal and the second internal signal; and a current valve configured to adjust at least a portion of the supply current based on the control signal.

    Electronic device and operating method to compensate for in-phase/quadrature imbalance
    8.
    发明授权
    Electronic device and operating method to compensate for in-phase/quadrature imbalance 有权

    公开(公告)号：US12184469B2

    公开(公告)日：2024-12-31

    申请号：US18168320

    申请日：2023-02-13

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Dong Han Kim ,  Sung Soo Kim ,  Wan Kim

    IPC: H04L25/06 ,  H03K5/01 ,  H04L27/38 ,  H03K5/00

    Abstract: An electronic device includes a feedback oscillator configured to output a first oscillation signal and a second oscillation signal, the second oscillation signal having a defined phase difference from the first oscillation signal, the feedback oscillator including a phase shifter configured to receive the first oscillation signal and output the second oscillation signal, an up-conversion mixer configured to output a first loopback signal obtained by mixing the first oscillation signal with a reference tone signal, and output a second loopback signal obtained by mixing the second oscillation signal with the reference tone signal, and a receiver configured to generate a first reference IQ signal from the first loopback signal, generate a second reference IQ signal from the second loopback signal, and compare an actual phase difference between the first reference IQ signal and the second reference IQ signal with the defined phase difference.

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