DECODING SYSTEMS AND METHODS FOR MITIGATING DISTORTIONS IN DIGITAL SIGNALS

    公开(公告)号:US20240179036A1

    公开(公告)日:2024-05-30

    申请号:US18059103

    申请日:2022-11-28

    CPC classification number: H04L25/4904

    Abstract: Various embodiments of the present disclosure disclose decoding techniques for mitigating data corruption due to duty cycle distortion, jitter, and other distortions to a digital signal. Decoding processes, apparatuses, and systems are provided that utilize a decoding framework for improving the accuracy of output bit streams generated from digital signals. An example process receives data indicative of a digital signal, generates a signal measurement for the digital signal that includes signal length descriptive between a two rising edges of a digital signal or two falling edges of the demodulated digital signal, and generates at least one portion of an output bit stream for the digital signal based at least in part on the signal measurement.

    PROTECTION OF AN INTEGRATED CIRCUIT AGAINST ELECTROSTATIC DISCHARGES

    公开(公告)号:US20240170960A1

    公开(公告)日:2024-05-23

    申请号:US18512292

    申请日:2023-11-17

    CPC classification number: H02H9/046

    Abstract: An ESD protection circuit includes a first voltage limiter having a first input terminal electrically coupled to each first signal pad of an integrated circuit by a first diode mounted in reverse bias during the integrated circuit operation. The first voltage limiter is mounted to be conductive between each first signal pad and ground during a positive ESD on the first signal pad. A second voltage limiter is electrically coupled and mounted to be conductive in the same direction as the first voltage limiter, between an external power supply pad and ground. An internal node outputs an internal power supply voltage to the domain, and is passed through by a current in response to a positive ESD on the power supply pad which is lower than the current passing through the first voltage limiter. A blocking diode is electrically connected between the first input terminal and the power supply pad.

    On chip test architecture for continuous time delta sigma analog-to-digital converter

    公开(公告)号:US11901919B2

    公开(公告)日:2024-02-13

    申请号:US17723225

    申请日:2022-04-18

    CPC classification number: H03M3/378 H03M3/46 H03M3/496

    Abstract: An integrated circuit includes a continuous time delta sigma analog-to-digital converter (CTDS ADC) and a test circuit for testing the CTDS ADC. The test circuit converts multi-bit digital reference data to a single-bit digital stream. The test circuit then passes the single-bit digital stream to a finite impulse response digital-to-analog converter (FIR DAC). The FIR DAC converts the single-bit digital stream to an analog test signal. The analog test signal is then passed to the CTDS ADC. The CTDS ADC converts the analog test signal to digital test data. The test circuit analyzes the digital test data to determine the accuracy of the CTDS ADC.

    SHORT CIRCUIT FAULT PROTECTION FOR A REGULATOR
    149.
    发明公开

    公开(公告)号:US20240045458A1

    公开(公告)日:2024-02-08

    申请号:US18356818

    申请日:2023-07-21

    CPC classification number: G05F1/575 G05F1/468

    Abstract: Provided are techniques for detecting a short circuit fault at an output of a regulator and protecting the regulator from the short circuit fault. An error amplifier receives a reference voltage and a feedback voltage and compares comparing the reference voltage with the feedback voltage for driving a power transistor of the regulator. A modification stage compares an output voltage of the voltage regulator with a fault reference voltage and in response to determining that the output voltage of the voltage regulator is less than the fault reference voltage, drives the power transistor using an internal node of the error amplifier by changing states of a first switch and a second switch and supplies the reference voltage to both the first and second inputs of the error amplifier by changing states of a third switch and a fourth switch.

    Controlled curvature correction in high accuracy thermal sensor

    公开(公告)号:US11892360B2

    公开(公告)日:2024-02-06

    申请号:US17136240

    申请日:2020-12-29

    CPC classification number: G01K7/00 H03K17/60 G01K2219/00

    Abstract: Circuitry generates base-to-emitter voltages (Vbe1, Vbe2) of two BJTs biased at different current densities, a base-to-emitter voltage (Vbe) of a BJT biased so Vbe is complementary to absolute temperature and has a curved non-linearity across temperature, and base-to-emitter voltages (Vbe1_c, Vbe2_c) of two BJTs biased by a temperature independent constant current and a current proportional to absolute temperature so Vbe2_c−Vbe1_c has the same but opposite curved non-linearity across temperature as Vbe. A sampling circuit samples these voltages and provides them to inputs of a loop filter. Filter outputs are quantized to produce a bitstream. The sampling circuit: when the received bit of the bitstream is zero, causes integration of Vbe1−Vbe2 to produce a voltage proportional to absolute temperature (αΔVbe); and when the received bit of the bitstream is one, causes integration of Vbe2_c−Vbe_Vbe1_c to produce a negative voltage complementary to absolute temperature −Vbe_c without non-linearity across temperature.

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