Breakdown protection circuit for power amplifier

    公开(公告)号:US10797656B2

    公开(公告)日:2020-10-06

    申请号:US16055437

    申请日:2018-08-06

    Abstract: Systems, methods, and apparatuses for improving reliability and/or reducing or preventing breakdown of an amplifier, specifically breakdown of a transistor of an amplifier, are disclosed. A protection circuit can be electrically coupled to the amplifier, and can be configured to reduce a voltage swing at the amplifier. The amplifier can include a first transistor, and the protection circuit can include a second transistor electrically coupled to a control terminal of the first transistor of the amplifier. When a power at a control terminal of the second transistor of the protection circuit satisfies a threshold power, the protection circuit can be configured to reduce a power at a power terminal of the first transistor the amplifier. By reducing the voltage at the power terminal of the first transistor the amplifier, the protection circuit can allow the amplifier to operate safely, without breakdown.

    Multiturn sensor arrangement and readout

    公开(公告)号:US10782153B2

    公开(公告)日:2020-09-22

    申请号:US15064544

    申请日:2016-03-08

    Inventor: Jochen Schmitt

    Abstract: A system includes a multiturn counter that can store a magnetic state associated with a number of accumulated turns of a magnetic field. The multiturn counter includes a plurality of magnetoresistive elements electrically coupled in series with each other. A matrix of electrical connections is arranged to connect magnetoresistive elements of the plurality of magnetoresistive elements to other magnetoresistive elements of the plurality of magnetoresistive elements.

    CONTINUOUS-TIME SAMPLER CIRCUITS
    10.
    发明申请

    公开(公告)号:US20200295977A1

    公开(公告)日:2020-09-17

    申请号:US16833177

    申请日:2020-03-27

    Abstract: A continuous-time sampler has series-connected delay lines with intermediate output taps between the delay lines. Signal from an output tap can be buffered by an optional voltage buffer for performance. A corresponding controlled switch is provided with each output tap to connect the output tap to an output of the continuous-time sampler. The delay lines store a continuous-time input signal waveform within the propagation delays. Controlling the switches corresponding to the output taps with pulses that match the propagation delays can yield a same input signal value at the output. The continuous-time sampler effectively “holds” or provides the input signal value at the output for further processing without requiring switched-capacitor circuits that sample the input signal value onto some capacitor. In some cases, the continuous-time sampler can be a recursively-connected delay line. The continuous-time sampler can be used as the front end sampler in a variety of analog-to-digital converters.

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