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公开(公告)号：US12167184B2
公开(公告)日：2024-12-10
申请号：US17043795
申请日：2019-04-02
Applicant: RENSSELAER POLYTECHNIC INSTITUTE
Inventor： Bassem Fahs , Robert F. Karlicek, Jr. , Mona Mostafa Hella
Abstract: A cross-connect switch architecture is described. A cross-connect switch device includes a cross-point switch array, a plurality of photo detectors and a plurality of amplifiers. The cross-point switch array includes a plurality of switches. Each switch is coupled between a respective photo detector and a respective amplifier and is configured to couple the respective photo detector to the respective amplifier when the switch is selected.
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2.发明公开公开(公告)号：US20240267655A1
公开(公告)日：2024-08-08
申请号：US18165663
申请日：2023-02-07
Applicant: Raytheon Company
Inventor： Bryan W. Kean
IPC: H04N25/778 , H03F3/08 , H04N25/709
CPC classification number: H04N25/778 , H03F3/087 , H04N25/709
Abstract: An apparatus includes a photodetector configured to generate an electrical current based on received illumination. The apparatus also includes a capacitor transimpedance amplifier (CTIA) unit cell having (i) an amplifier configured to receive the electrical current and a first reference voltage and generate a pre-integration voltage, (ii) a feedback capacitor coupled in parallel across the amplifier, (iii) a reset switch coupled in parallel across the feedback capacitor, and (iv) a coupling capacitor coupled to an output of the amplifier and configured to receive the pre-integration voltage and generate an integration voltage. The apparatus further includes a comparator configured to compare the pre-integration voltage and a second reference voltage, where generation of the integration voltage is modifiable based on the comparison.
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3.发明公开公开(公告)号：US20240267006A1
公开(公告)日：2024-08-08
申请号：US18165713
申请日：2023-02-07
Applicant: Raytheon Company
Inventor： Bryan W. Kean
CPC classification number: H03F3/087 , H03F1/083 , H03F3/005 , H03F2203/45551
Abstract: An apparatus includes a photodetector configured to generate an electrical current based on received illumination. The apparatus also includes a capacitor transimpedance amplifier (CTIA) unit cell configured to generate an integration voltage based on the electrical current. The CTIA unit cell includes (i) an amplifier configured to receive the electrical current and a first reference voltage, (ii) a feedback capacitor coupled in parallel across the amplifier, and (iii) a reset switch coupled in parallel across the feedback capacitor. The apparatus further includes a comparator configured to compare an input voltage of the amplifier and a second reference voltage, where generation of the integration voltage is modifiable based on the comparison.
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公开(公告)号：US20240146256A1
公开(公告)日：2024-05-02
申请号：US18406864
申请日：2024-01-08
Applicant: Huawei Technologies Co., Ltd.
CPC classification number: H03F3/082 , H03F1/342 , H03F2200/144 , H03F2200/441
Abstract: Embodiments of this application disclose a trans-impedance amplifier and a trans-impedance amplifier control method that are used in the field of circuit technologies. A trans-impedance amplifier TIA includes an inverting amplification circuit and a voltage clamping circuit. The inverting amplification circuit is connected in parallel to the voltage clamping circuit. The inverting amplification circuit includes a first PMOS transistor and a first NMOS transistor that have a common gate. A source of the first PMOS transistor is connected to a drain of the first NMOS transistor. The voltage clamping circuit includes a second PMOS transistor and a second NMOS transistor that have a common gate. Gates of the two transistors are connected to an input end of the TIA. A source of the second NMOS transistor and a drain of the second PMOS transistor are connected to an output end of the TIA.
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公开(公告)号：US11973478B2
公开(公告)日：2024-04-30
申请号：US17464763
申请日：2021-09-02
Applicant: GLOBALFOUNDRIES U.S. Inc.
Inventor： Xu Zhang , Mingming Zhang , Hanqing Zhao , Lukun Zhai , Dan Liu , Xuan Li
CPC classification number: H03F3/45475 , H04B10/6911
Abstract: Apparatuses include (among other components) a first gain device connected to receive an initial voltage, a second gain device in series with the first gain device and connected to receive output of the first gain device, differential gain devices connected to receive outputs from the first gain device and the second gain device (the differential gain devices provide opposite voltage outputs from the apparatus) and high-frequency compensation feed-forward paths connected to the first gain device and the second gain device.
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Patent Agency Ranking
公开(公告)号：US11874213B2
公开(公告)日：2024-01-16
申请号：US17201853
申请日：2021-03-15
Applicant: Becton, Dickinson and Company
Inventor： Timothy W. Petersen , Pierce O. Norton , Henry Lankila , Eric D. Diebold
CPC classification number: G01N15/1434 , G01R27/02 , H03F3/08 , G01N2015/149
Abstract: Aspects of the present disclosure include methods for adjusting sensitivity of a photodiode in a light detection system. Methods according to certain embodiments include detecting light with a light detection system having a photodiode and an amplifier, determining responsivity of the photodiode over a plurality of wavelengths of light and adjusting one or more parameters of the amplifier in response to the responsivity of the photodiode over the plurality of wavelengths of light. Systems (e.g., particle analyzers) having a light source and a light detection system that includes a photodiode and an amplifier for practicing the subject methods are also described. Non-transitory computer readable storage medium are also provided.
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公开(公告)号：US11843355B2
公开(公告)日：2023-12-12
申请号：US17649994
申请日：2022-02-04
Applicant: Raytheon Company
Inventor： Bryan W. Kean , Eric J. Beuville , Ravi S. Kirschner
Abstract: An apparatus includes a photodetector configured to generate an electrical current based on received illumination. The apparatus also includes a capacitor transimpedance amplifier (CTIA) unit cell having (i) an amplifier configured to receive the electrical current and a reference voltage, (ii) a feedback capacitor coupled in parallel across the amplifier, and (iii) a reset switch coupled in parallel across the feedback capacitor. The apparatus further includes an event detector configured to sense a high-energy event affecting the photodetector. In addition, the apparatus includes a switchable clamp coupled across inputs of the amplifier, where the event detector is configured to close the switchable clamp in response to sensing the high-energy event.
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公开(公告)号：US11777452B1
公开(公告)日：2023-10-03
申请号：US18041203
申请日：2021-12-24
Applicant: XIAMEN EOCHIP SEMICONDUCTOR CO., LTD
Inventor： Zhicong Luo , Jinghu Li , Riqing Chen , Haofan Ding , Xin Hong , Jianhai Yu , Hanghui Tu
CPC classification number: H03F1/301 , H03F1/42 , H03F3/45179 , H03F2200/36 , H03F2200/447
Abstract: A high-speed transimpedance amplifier with bandwidth extension feature over full temperature range and bandwidth extension method belong to the field of integrated circuit. The present invention solves the problem existed in boosting core amplifier bandwidth technology over full temperature range. The present invention includes a preamplifier TIA, a phase splitting stage PS, a pre-driver stage Pre-Drive, an output buffer BUFF and an offset cancelation circuit OC. The preamplifier TIA adopts the gate-drain voltage cancelation technology to expand the bandwidth, so that its −3 dB bandwidth is greater than twice the closed-loop bandwidth of the first-order TIA. The pre-driver stage Pre-Drive is used to drive the output buffer BUFF. By adjusting the source-level negative feedback capacitance value of the pre-driver stage Pre-Drive circuit to generate a high-frequency gain that varies with temperature, the preamplifier TIA bandwidth differences under different temperature conditions are compensated.
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公开(公告)号：US11774294B2
公开(公告)日：2023-10-03
申请号：US17063304
申请日：2020-10-05
Applicant: Gwanak Analog CO., LTD.
Inventor： Suhwan Kim
CPC classification number: G01K3/005 , H03F3/16 , H03F3/45475 , H03F3/45744 , G01K2219/00 , G01N15/02 , G01N15/0205 , H03F3/005 , H03F3/087 , H03F3/45968 , H03F2200/375
Abstract: An amplifier includes an amplification circuit including an input circuit receiving an input signal and configured to output an output signal by amplifying the input signal; and an offset cancelling circuit configured to cancel offset by controlling the input circuit according to activation control signal and offset control signal, wherein the offset cancelling circuit cancels the offset according to the offset control signal after the activation control signal is activated.
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公开(公告)号：US11626849B2
公开(公告)日：2023-04-11
申请号：US17349086
申请日：2021-06-16
Applicant: YOKOGAWA ELECTRIC CORPORATION
Inventor： Toshihiko Kyakuno
Abstract: An amplifier circuit includes: an operational amplifier that includes two input terminals and an output terminal; a voltage-dividing resistor circuit electrically connected to the output terminal and that includes a voltage-dividing terminal that outputs a potential obtained by voltage-dividing a potential of the output terminal and a feedback resistor circuit electrically connected to the voltage-dividing terminal and one of the two input terminals. The voltage-dividing resistor circuit includes a plurality of resistors that each include terminals and a switch. The plurality of resistors includes a first resistor and a second resistor. The first resistor includes a terminal that corresponds to the voltage-dividing terminal. The switch switches, from a first terminal of the first resistor to a second terminal of the second resistor, the terminal that corresponds to the voltage-dividing terminal.
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