LOW POWER DIGITAL LOW-DROPOUT POWER REGULATOR

    公开(公告)号:US20230012155A1

    公开(公告)日:2023-01-12

    申请号:US17782562

    申请日:2020-12-04

    Abstract: Digital logic voltage regulators and related methods generate a regulated voltage via controlled switching of a power transistor. A digital logic voltage regulator includes a voltage level comparator, a power transistor, and a charge accumulator. The voltage level comparator generates a digital control signal that alternates between a first voltage level and a second voltage level in response to changes in relative voltage level between the regulated output voltage and the target voltage. The digital control signal causes the power transistor to switch from off to on in response to a reduction of the regulated output voltage relative to the target voltage and causes the power transistor to switch from on to off in response to an increase of the regulated output voltage relative to the target voltage. The charge accumulator decreases variation in the regulated output voltage that would occur without the charge accumulator.

    GLUCOSE SENSING DEVICE
    4.
    发明申请

    公开(公告)号:US20210116410A1

    公开(公告)日:2021-04-22

    申请号:US17058485

    申请日:2019-06-03

    Abstract: A glucose sensor includes an insulating metal oxide layer and at least one pair of metallic electrodes arranged on the insulating metal oxide layer and separated by a gap containing the metal oxide layer. In operation, a probe including a voltage supply and current sensor can provide a voltage difference across the first and second metallic electrodes while a sample is present across the gap between the electrodes. A measured current between the first and second metallic electrodes when the voltage difference is provided can be correlated to a glucose level of the sample.

    CROSS COUPLED CAPACITOR ANALOG IN-MEMORY PROCESSING DEVICE

    公开(公告)号:US20230229870A1

    公开(公告)日:2023-07-20

    申请号:US17998346

    申请日:2021-05-19

    CPC classification number: G06G7/16

    Abstract: A system for performing analog multiply-and-accumulate (MAC) operations employs at least one cross coupling capacitor processing unit (C3PU). A system includes a wordline to which an analog input voltage is applied, a voltage supply line having a supply voltage (VDD), a bitline, a clock signal line, a current integrator op-amp connected to the bitline and to the clock signal line, and a C3PU connected to the wordline. The C3PU includes a CMOS transistor and a capacitive unit. The capacitive unit includes a cross coupling capacitor and a gate capacitor. The cross coupling capacitor is connected between the wordline and the gate terminal of the CMOS transistor. The gate capacitor is connected between the gate terminal and ground. The CMOS transistor is configured to conduct a current that is proportional to voltage applied to the gate terminal.

    LOW POWER MEMRISTIVE VACUUM SENSOR

    公开(公告)号:US20220412836A1

    公开(公告)日:2022-12-29

    申请号:US17840335

    申请日:2022-06-14

    Abstract: Techniques for measuring vacuum pressure using a memristor element are described. A vacuum sensor can include a memristor element having a semiconductor substrate, a memristive material layer, and a conductive electrode. The off-state resistance of the memristor element can be sensitive to changes in ambient pressure at the element. The off-state resistance of the memristor element may also exhibit a well-defined increase at pressures below a threshold pressure. Measurement of the off-state resistance may be obtained with low power consumption and without changing the resistance or switching the state of the memristor element. The measurements may be used to both determine a leak rate of the ambient pressure within the volume of interest and determine if the sensor is exposed to vacuum pressure below the threshold pressure.

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