CIRCUIT FOR BIASING AN EXTERNAL RESISTIVE SENSOR

    公开(公告)号:US20230386514A1

    公开(公告)日:2023-11-30

    申请号:US18191639

    申请日:2023-03-28

    IPC分类号: G11B5/60 H03F1/02

    摘要: According to an embodiment, a circuit includes a biasing and a low-frequency recovery circuit. The biasing circuit includes a voltage digital to analog converter (V-DAC), a differential difference amplifier coupled to the V-DAC, a common-mode feedback (CMFB) amplifier coupled to the differential difference amplifier, and a first pair of transistors arranged as a high-impedance structure and coupled to the differential difference amplifier and the CMFB amplifier. The low-frequency recovery circuit includes a current digital to analog converter (C-DAC), a second pair of transistors arranged as a high-impedance structure and coupled to the first pair of transistors, a pair of resistors having a resistance value equal to half a resistance of the resistive sensor, the pair of resistors arranged between the second pair of transistors and coupled to the C-DAC, and a gain circuit coupled to shared nodes between the second pair of transistors and the pair of resistors.

    VOLTAGE REGULATOR
    2.
    发明申请

    公开(公告)号:US20220413531A1

    公开(公告)日:2022-12-29

    申请号:US17362532

    申请日:2021-06-29

    IPC分类号: G05F1/565 G05F1/575 G11B5/012

    摘要: In an embodiment, a linear voltage regulator includes: an output transistor having a first current path terminal configured to be coupled to a load, and a second current path terminal coupled to a first supply terminal, where the output transistor is configured to provide, at the first current path terminal, a regulated output voltage; a voltage source circuit configured to provide, in an open loop manner, a first voltage to a control terminal of the output transistor; and a feedback loop coupled between the first current path terminal of the output transistor and the control terminal of the output transistor, the feedback loop including a sense transistor having a first current path terminal coupled to the first current path terminal of the output transistor.

    Low noise amplifier circuit for a thermal varying resistance

    公开(公告)号:US10965254B2

    公开(公告)日:2021-03-30

    申请号:US16392009

    申请日:2019-04-23

    IPC分类号: G11B5/09 H03F1/26 H03F3/45

    摘要: A circuit arrangement, including: a circuit configured to synthesize a resistor having a resistance value having a variation in time equivalent to a resistance variation of a sensor resistor applied with a resistance bias voltage and a resistance current bias, wherein the circuit includes: an amplifier comprising an input transistor; a bias current generator comprising a control node coupled to an output of the input transistor, wherein the bias current generator is configured to generate a bias current flowing in the input transistor; and a further current generator configured to generate a current at least proportional to the resistance bias current and coupled to the output of the input transistor, wherein the resistance bias voltage is applied to an input of the amplifier, and wherein a transconductance of the input transistor is at least proportional to the resistance of the sensor resistor.

    Voltage regulator
    6.
    发明授权

    公开(公告)号:US11720128B2

    公开(公告)日:2023-08-08

    申请号:US17362532

    申请日:2021-06-29

    IPC分类号: G05F1/565 G11B5/012 G05F1/575

    CPC分类号: G05F1/565 G05F1/575 G11B5/012

    摘要: In an embodiment, a linear voltage regulator includes: an output transistor having a first current path terminal configured to be coupled to a load, and a second current path terminal coupled to a first supply terminal, where the output transistor is configured to provide, at the first current path terminal, a regulated output voltage; a voltage source circuit configured to provide, in an open loop manner, a first voltage to a control terminal of the output transistor; and a feedback loop coupled between the first current path terminal of the output transistor and the control terminal of the output transistor, the feedback loop including a sense transistor having a first current path terminal coupled to the first current path terminal of the output transistor.

    LOW NOISE AMPLIFIER CIRCUIT FOR A THERMAL VARYING RESISTANCE

    公开(公告)号:US20230009311A1

    公开(公告)日:2023-01-12

    申请号:US17952574

    申请日:2022-09-26

    IPC分类号: H03F1/26 H03F3/45

    摘要: A circuit arrangement, including: a circuit configured to synthesize a resistor having a resistance value having a variation in time equivalent to a resistance variation of a sensor resistor applied with a resistance bias voltage and a resistance current bias, wherein the circuit includes: an amplifier comprising an input transistor; a bias current generator comprising a control node coupled to an output of the input transistor, wherein the bias current generator is configured to generate a bias current flowing in the input transistor; and a further current generator configured to generate a current at least proportional to the resistance bias current and coupled to the output of the input transistor, wherein the resistance bias voltage is applied to an input of the amplifier, and wherein a transconductance of the input transistor is at least proportional to the resistance of the sensor resistor.

    Differential driver
    9.
    发明授权

    公开(公告)号:US11855588B2

    公开(公告)日:2023-12-26

    申请号:US17581334

    申请日:2022-01-21

    IPC分类号: H03F3/45 H03F1/32

    摘要: In an embodiment, an electronic circuit includes: an input differential pair including first and second transistors; a first pair of transistors in emitter-follower configuration including third and fourth transistors, and an output differential pair including fifth and sixth transistors. The third transistor has a control terminal coupled to the first transistor, and a current path coupled to a first output terminal. The fourth transistor has a control terminal coupled to the second transistor, and a current path coupled to a second output terminal. The fifth transistor has a control terminal coupled to the first transistor, and a first current path terminal coupled to the first output terminal. The sixth transistor has a control terminal coupled to the second transistor, and a first current path terminal coupled to the second output terminal. First and second termination resistors are coupled between the first pair of transistors and the output differential pair.

    DIFFERENTIAL DRIVER
    10.
    发明公开
    DIFFERENTIAL DRIVER 审中-公开

    公开(公告)号:US20230238921A1

    公开(公告)日:2023-07-27

    申请号:US17581334

    申请日:2022-01-21

    IPC分类号: H03F1/32 H03F3/45

    摘要: In an embodiment, an electronic circuit includes: an input differential pair including first and second transistors; a first pair of transistors in emitter-follower configuration including third and fourth transistors, and an output differential pair including fifth and sixth transistors. The third transistor has a control terminal coupled to the first transistor, and a current path coupled to a first output terminal. The fourth transistor has a control terminal coupled to the second transistor, and a current path coupled to a second output terminal. The fifth transistor has a control terminal coupled to the first transistor, and a first current path terminal coupled to the first output terminal. The sixth transistor has a control terminal coupled to the second transistor, and a first current path terminal coupled to the second output terminal. First and second termination resistors are coupled between the first pair of transistors and the output differential pair.