SPREAD SPECTRUM CLOCK GENERATOR
    651.
    发明申请

    公开(公告)号:US20180159544A1

    公开(公告)日:2018-06-07

    申请号:US15888153

    申请日:2018-02-05

    Abstract: A phase or frequency locked-loop circuit includes an oscillator configured to generate an output clock signal having a frequency set by an oscillator control signal. A modulator circuit receives a first signal and a second signal and is configured to generate a control signal having a value modulated in response to the first and second signals. A filter circuit generates the oscillator control signal by filtering the control signal. A delta-sigma modulator circuit operates to modulate the second signal in response to a modulation profile. As a result, the output clock signal is a spread spectrum clock signal.

    FRACTIONAL BANDGAP REFERENCE VOLTAGE GENERATOR
    652.
    发明申请

    公开(公告)号:US20180129239A1

    公开(公告)日:2018-05-10

    申请号:US15866651

    申请日:2018-01-10

    Inventor: Abhirup Lahiri

    CPC classification number: G05F3/30 G05F3/262

    Abstract: A reference voltage generator circuit includes a circuit that generates a complementary to absolute temperature (CTAT) voltage and a proportional to absolute temperature (PTAT) current. An output current circuit generates, from the PTAT current, a sink PTAT current sunk from a first node and a source PTAT current sourced to a second node, wherein the sink and source PTAT currents are equal. A resistor is directly connected between the first node and the second node. A divider circuit divides the CTAT voltage to generate a divided CTAT voltage applied to the first node. A voltage at the second node is a fractional bandgap reference voltage equal to a sum of the divided CTAT voltage and a voltage drop across the resistor that is proportional to a resistor current equal to the sink and source PTAT currents.

    Default data packet routing in a NFC device

    公开(公告)号:US09948752B2

    公开(公告)日:2018-04-17

    申请号:US14611343

    申请日:2015-02-02

    Inventor: Minh Tri Do Khac

    CPC classification number: H04L69/22 H04L45/306 H04L45/52 H04L45/74 H04W4/80

    Abstract: A method includes receiving a data packet transmitted by a near field communications (NFC) device at a NFC controller. Whether the data packet includes application identifier routing information is determined, and based thereupon the data packet is routed to a default application identifier routing address based on a look-up table lacking an application identifier routing address associated with the application identifier routing information. Whether the data packet includes protocol routing information is determined based upon the data packet lacking the application identifier routing information, and the data packet is routed to a default protocol routing address based upon the look-up table lacking a protocol routing address associated with the protocol routing information, using the NFC controller. The default application identifier routing address is different than the default protocol routing address.

    System and method for a linear voltage regulator

    公开(公告)号:US09927828B2

    公开(公告)日:2018-03-27

    申请号:US14841476

    申请日:2015-08-31

    CPC classification number: G05F3/267

    Abstract: According to an embodiment, a voltage regulator includes a linear voltage regulator (LVR) and a transient feedback circuit. The LVR a primary feedback loop, an input terminal configured to receive an input voltage, and an output terminal configured to output a regulated voltage. The transient feedback circuit is coupled to the output terminal and the primary feedback loop, and is configured to provide a first current with a first polarity to the primary feedback loop when current flowing through the output terminal is increasing.

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