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    TEMPERATURE COMPENSATION IN OSCILLATOR CIRCUITS
    1.
    发明公开
    TEMPERATURE COMPENSATION IN OSCILLATOR CIRCUITS 审中-公开

    公开(公告)号：EP4468596A1

    公开(公告)日：2024-11-27

    申请号：EP24175370.6

    申请日：2024-05-13

    Applicant: NXP USA, Inc.

    Inventor： Iqbal, Sadique Mohammad ,  Tripathi, Divya ,  Srivastava, Anubhav ,  Thakur, Krishna

    IPC: H03B5/04 ,  H03K3/011 ,  H03L1/02

    Abstract: Systems and methods for providing temperature compensation in oscillators circuits are discussed. In various embodiments, these systems and methods may be implemented in technologies where only resistors with the same type (positive or negative) of temperature coefficients of resistance are available. For example, in some implementations, an oscillator circuit may include a voltage generator coupled to an input terminal of a common gate amplifier through a first resistor, and a frequency-to-voltage converter coupled to another input terminal of the common gate amplifier through a second resistor, where the second resistor may be configured to reduce a frequency variation of the oscillator circuit in response to temperature changes.

    RC OSCILLATOR
    2.
    发明公开
    RC OSCILLATOR 审中-公开

    公开(公告)号：EP4395173A1

    公开(公告)日：2024-07-03

    申请号：EP23202188.1

    申请日：2023-10-06

    Applicant: GigaDevice Semiconductor Inc.

    Inventor： Li, Sheji ,  Liu, Sanlin

    IPC: H03K3/011 ,  H03K3/0231

    CPC classification number: H03K3/011 ,  H03K3/0231

    Abstract: Disclosed is an RC oscillator (300) comprising: a bias circuit (310), generating first and second bias currents (Ia, Ib), and outputting a charging current (IL) proportional to a total bias current that is the sum of the first and second bias currents, wherein the ratio (Ia/Ib) of the first bias current to the second bias current has a positive temperature coefficient; and an oscillation circuit (320), for periodically charging a capacitor (C0, C1) using the charging current output by the bias circuit, and using a voltage across a resistor (R2) through which the second bias current or a current proportional thereto flows as a reference voltage to compare with a charging voltage (Vcap) on the capacitor, so as to obtain a periodically oscillating clock signal (CLK, CLKB). Thus, the present disclosure can compensate the positive temperature coefficient of the subsequent delay and realize the RC oscillator with low temperature drift by making the charging time of the capacitor have a negative temperature coefficient.

    RING OSCILLATOR ARCHITECTURE WITH CONTROLLED SENSITIVITY TO SUPPLY VOLTAGE
    7.
    发明公开
    RING OSCILLATOR ARCHITECTURE WITH CONTROLLED SENSITIVITY TO SUPPLY VOLTAGE 审中-公开

    公开(公告)号：EP3295564A1

    公开(公告)日：2018-03-21

    申请号：EP16719662

    申请日：2016-04-15

    Applicant: QUALCOMM INC

    Inventor： YU XINXIN ,  SWAMINATHAN ASHOK ,  VENERUS CHRISTIAN

    IPC: H03K3/011 ,  H03K3/03

    CPC classification number: H03K3/0315 ,  H03K3/011 ,  H03L7/0995 ,  H03L7/0997

    Abstract: A method and apparatus for controlling a supply sensitivity of a ring oscillator stage are provided. The apparatus is configured to generate, via a voltage biasing module, a first bias signal for a PMOS biasing module based on a supply voltage and a second bias signal for a NMOS biasing module based on the supply voltage, bias, via the PMOS biasing module, triode PMOS degeneration of the inverting module based on the first bias signal, bias, via the NMOS biasing module, triode NMOS degeneration of the inverting module based on the second bias signal, receive an input via an inverting module, and output, via the inverting module, an inverted version of the received input based on the biased triode NMOS degeneration and the biased triode PMOS degeneration.

    Oscillator circuit and electronic system comprising oscillator circuit
    9.
    发明公开
    Oscillator circuit and electronic system comprising oscillator circuit 有权
    Oszillatorschaltung und elektronisches System mit Oszillatorschaltung

    公开(公告)号：EP2541769A1

    公开(公告)日：2013-01-02

    申请号：EP12167144.0

    申请日：2012-05-08

    Applicant: STMicroelectronics S.r.l.

    Inventor： Giacomini, Mauro

    IPC: H03K3/011 ,  H03K3/0231 ,  H03K3/354

    CPC classification number: H03K3/0231 ,  H03K3/011 ,  H03K3/354 ,  H03K4/501

    Abstract: It is described an oscillator circuit (1) comprising a first capacitor (c1) provided with a first terminal (16); a resistor (r) provided with a reference terminal (18); a first current generator (g1) provided with a connection terminal (14); a second current generator (g2) provided with a second connection terminal (15). Further, the circuit comprises a switching matrix (13) between the first (g1) and second generators (g2) and resistor (r) and the at least one first capacitor (c1).

    Abstract translation: 描述了包括设置有第一端子（16）的第一电容器（c1）的振荡器电路（1） 设置有参考端子（18）的电阻器（r）; 设置有连接端子（14）的第一电流发生器（g1）; 具有第二连接端子（15）的第二电流发生器（g2）。 此外，电路包括在第一（g1）和第二发生器（g2）和电阻器（r）和至少一个第一电容器（c1）之间的开关矩阵（13）。

    Temperature correcting current-controlled ring oscillators
    10.
    发明公开
    Temperature correcting current-controlled ring oscillators 审中-公开
    Stromgesteuerte Ringoszillatoren zur Temperaturkorrectur

    公开(公告)号：EP2482453A1

    公开(公告)日：2012-08-01

    申请号：EP12152922.6

    申请日：2012-01-27

    Applicant: NXP B.V.

    Inventor： Bugbee, Martin ,  Burtt, Andrew

    IPC: H03K3/011 ,  H03K3/03

    CPC classification number: H03K3/011 ,  H03K3/0315

    Abstract: A thermally-compensated oscillator (12) has a current reference (9) with an output current which relates to an ambient temperature with a first relationship, a ring oscillator (10) having an operating frequency which relates to the ambient temperature with a second relationship, and which receives the output current of the current reference (9) and outputs an oscillator signal, and a level shifter (11) which receives the oscillator signal from the ring oscillator (10) and outputs a corresponding voltage-regulated clock signal (CLK).

    Abstract translation: 热补偿振荡器（12）具有电流基准（9），其具有与第一关系的环境温度相关的输出电流;环形振荡器（10）具有与第二关系的环境温度相关的工作频率 ，并且其接收电流基准（9）的输出电流并输出振荡器信号，以及电平转换器（11），其从环形振荡器（10）接收振荡器信号，并输出相应的电压调节时钟信号（CLK ）。

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