STARTUP CIRCUIT AND METHODS OF USE FOR AUDIO ACCESSORIES

    公开(公告)号:US20180146276A1

    公开(公告)日:2018-05-24

    申请号:US15472017

    申请日:2017-03-28

    CPC classification number: H04R1/1041 G06F3/165 H03H7/32 H04R2420/09

    Abstract: An accessory device, configured to be interfaced with a master device, and configured to operate in an analog mode and in a digital mode, the accessory device including: a startup circuit including: a first transistor that interfaces the accessory device to the master device, wherein the first transistor is configured with a first resistive capacitive (RC) circuit to turn on the first transistor according to a time constant of the first RC circuit; a second transistor coupled between ground and the first RC circuit, wherein the second transistor is configured to control a gate of the first transistor in response to a control signal; and a diode having an anode coupled to the first node and a cathode coupled to a body terminal of the first transistor.

    Antenna and Cabling Unification
    4.
    发明申请

    公开(公告)号:US20190058617A1

    公开(公告)日:2019-02-21

    申请号:US16108045

    申请日:2018-08-21

    Abstract: Apparatuses, methods, and electronic devices are disclosed for antenna and cabling unification. In an example aspect, an electronic device includes a cabling connector, a digital interface, and a radio. The cabling connector includes multiple pins configured to couple the electronic device to a device connector of an external cabling apparatus. The multiple pins include a positive digital pin, a negative digital pin, and a first other pin. The digital interface includes a positive interface node and a negative interface node. The positive interface node is coupled to the positive digital pin, and the negative interface node is coupled to the negative digital pin. The radio includes an antenna node coupled to at least the first other pin.

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