Radio Frequency Signal Attenuator And Method of Operation Thereof

    公开(公告)号:US20200177164A1

    公开(公告)日:2020-06-04

    申请号:US16780586

    申请日:2020-02-03

    Inventor: Renald Boulestin

    Abstract: An embodiment attenuator includes a plurality of circuits coupled in series. A respective circuit includes a first capacitor connected between an input node of the respective circuit and an output node of the respective circuit, and a second capacitor connected between the output node of the respective circuit and a reference node. The output node of the respective circuit, other than a last circuit of the plurality of circuits, is connected to the input node of a successive circuit. The attenuator further includes a plurality of selectors, in which the respective circuit is associated with a respective selector that is coupled between the output node of the respective circuit and an output node of the attenuator.

    Electronic device for ESD protection

    公开(公告)号:US10515946B2

    公开(公告)日:2019-12-24

    申请号:US15982443

    申请日:2018-05-17

    Abstract: A semiconductor device includes a thyristor disposed in a semiconductor body. The thyristor has an anode, a cathode, a first bipolar transistor located on an anode side, and a second bipolar transistor located on a cathode side. The first and second bipolar transistors are nested and connected between the anode and the cathode. A MOS transistor is disposed in the semiconductor body. The MOS transistor is coupled between a collector region and an emitter region of the second bipolar transistor. The MOS transistor has a gate region connected to the cathode via a resistive semiconductor region that incorporates at least a part of a base region of the second bipolar transistor.

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