Slew rate control circuit for an image sensor

    公开(公告)号:US11070754B1

    公开(公告)日:2021-07-20

    申请号:US16828423

    申请日:2020-03-24

    Abstract: In an embodiment, an image sensor includes: first and second voltage rails; first and second regulators configured to generate first and second regulated voltage at the first and second voltage rails, respectively; and a plurality of pixels coupled to the first and second voltage rails. Each pixel includes: first and second transistor coupled first and second storage capacitor, respectively. A third transistor is coupled between a control terminal of the first transistor and the first or second voltage rails. The third transistor is configured to limit a slew rate of current flowing between the control terminal of the second transistor and the first or second voltage rails to a first slew rate when the image sensor operates in global shutter mode, and to a second slew rate when the image sensor operates in rolling mode, the first slew rate being smaller than the second slew rate.

    Device and method of compensation stabilization using Miller effect

    公开(公告)号:US10534389B2

    公开(公告)日:2020-01-14

    申请号:US16130706

    申请日:2018-09-13

    Inventor: Kuno Lenz

    Abstract: In some embodiments, a Miller compensation and stabilization device for a feedback control loop includes a capacitor and a control circuit. The capacitor has a first terminal configured to be coupled to an output of a comparator of the feedback control loop and a second terminal. The control circuit is coupled to the second terminal of the capacitor and is configured to control, in response to a voltage applied to a setpoint input of the feedback control loop, a first voltage across the first and second terminals of the capacitor by controlling a value of a potential of the second terminal of the capacitor such that the first voltage is lower than a threshold.

    Switched-Mode Power Supply
    188.
    发明申请

    公开(公告)号:US20190319540A1

    公开(公告)日:2019-10-17

    申请号:US16385214

    申请日:2019-04-16

    Inventor: Patrik Arno

    Abstract: In an embodiment, an SMPS comprises a half-bridge, and a driver configured to drive the half-bridge based on a PWM signal. The SMPS further comprising a first circuit coupled between the output of the driver and a control terminal of a high-side transistor of the half-bridge, wherein the first circuit is configured to maintain the first transistor on when the PWM signal has a duty cycle that is substantially 100%.

    Linearization of a radiofrequency-signal transmission chain

    公开(公告)号:US10326482B2

    公开(公告)日:2019-06-18

    申请号:US16003623

    申请日:2018-06-08

    Inventor: Herve Jacob

    Abstract: A transmission chain receives an incident signal to be transmitted having a first power and a first bandwidth. A first modulator frequency shifts a first signal derived from the incident signal to generate a first shifted signal at a modulation output. A power amplifier coupled to the modulation output amplifies an intermediate signal to generate an amplified output signal. A predistortion-signal-generating circuit generates, from the incident signal and from the amplified output signal in a second bandwidth that is larger than the first bandwidth, a predistortion signal having a second power lower than the first power. A second modulator frequency shifts a second signal derived from the predistortion signal to generate a second shifted signal for combination with the first shifted signal at said modulation output to produce the intermediate signal.

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