LOW CAPACITANCE ANALOG SWITCH OR TRANSMISSION GATE

    公开(公告)号:US20180062644A1

    公开(公告)日:2018-03-01

    申请号:US15254696

    申请日:2016-09-01

    IPC分类号: H03K17/687 H03F3/45 H03G3/30

    摘要: A low capacitance n-channel analog switch circuit, a p-channel analog switch circuit, and a full CMOS transmission gate (T-gate) circuit are described. Resistive decoupling can be used to isolate the switch or T-gate from AC grounds, such as one or more switch control signal inputs or supply voltages. A semiconductor region that is separated from a body region of a pass field-effect transistor (FET) can be coupled to or driven to a voltage similar to the input voltage or other desired voltage to help reduce parasitic capacitance of the switch or T-gate. The switch or T-gate can have improved frequency bandwidth or frequency response. The switch can be useful in a programmable gain amplifier (PGA) or programmable gain instrumentation amplifier (PGIA) or other circuit in which excessive switch capacitance could degrade circuit performance.

    SUPPLY-SWITCHING SYSTEM
    14.
    发明申请

    公开(公告)号:US20170310159A1

    公开(公告)日:2017-10-26

    申请号:US15646085

    申请日:2017-07-10

    申请人: NXP USA, Inc.

    摘要: A system for providing a first voltage generated by a main supply and a second voltage generated by a battery to an integrated circuit (IC) includes supply-selection, control logic and switching circuits. The supply-selection circuit includes first, second, and third transistors. The switching circuit includes fourth and fifth transistors that supply the first and second voltages to the IC when switched on. The supply-selection circuit selects and provides the higher of the first and second voltages to body terminals of the fourth and fifth transistors for maintaining required body-bias voltage conditions. The control logic circuit generates a first control signal as long as the first voltage is within a predetermined range for keeping the fourth transistor switched on and a second control signal when the first voltage is not within the predetermined range for switching on the fifth transistor to supply the second voltage.

    Integrated Circuit Device Body Boas Circuits and Methods
    18.
    发明申请
    Integrated Circuit Device Body Boas Circuits and Methods 有权
    集成电路器件体积电路和方法

    公开(公告)号:US20170047100A1

    公开(公告)日:2017-02-16

    申请号:US15337876

    申请日:2016-10-28

    摘要: A system having an integrated circuit (IC) device can include a die formed on a semiconductor substrate and having a plurality of first wells formed therein, the first wells being doped to at least a first conductivity type; a global network configured to supply a first global body bias voltage to the first wells; and a first bias circuit corresponding to each first well and configured to generate a first local body bias for its well having a smaller setting voltage than the first global body bias voltage; wherein at least one of the first wells is coupled to a transistor having a strong body coefficient formed therein, which transistor may be a transistor having a highly doped region formed below a substantially undoped channel, the highly doped region having a dopant concentration greater than that the corresponding well.

    摘要翻译: 具有集成电路(IC)装置的系统可以包括形成在半导体衬底上并具有形成在其中的多个第一阱的管芯,第一阱被掺杂至少为第一导电类型; 全球网络,其被配置为向所述第一井提供第一全局体偏置电压; 以及对应于每个第一阱的第一偏置电路,并且被配置为产生具有比第一全局体偏置电压更小的设置电压的阱的第一局部体偏置; 其中所述第一阱中的至少一个耦合到其中形成有强体系的晶体管,所述晶体管可以是形成在基本上未掺杂沟道下方的具有高掺杂区的晶体管,所述高掺杂区具有大于其掺杂浓度的掺杂浓度。 相应的井。

    High-frequency switching circuit
    19.
    发明授权
    High-frequency switching circuit 有权
    高频开关电路

    公开(公告)号:US09570974B2

    公开(公告)日:2017-02-14

    申请号:US12704737

    申请日:2010-02-12

    IPC分类号: H03K17/16 H03K17/687 H02M3/07

    摘要: A high-frequency switching circuit includes a high-frequency switching transistor, wherein a high-frequency signal-path extends via a channel-path of the high-frequency switching transistor. The high-frequency switching circuit includes a control circuit and the control circuit is configured to apply at least two different bias potentials to a substrate of the high-frequency switching transistor, depending on a control signal received by the control circuit.

    摘要翻译: 高频开关电路包括高频开关晶体管,其中高频信号路径经由高频开关晶体管的沟道路径延伸。 高频开关电路包括控制电路,并且控制电路被配置为根据由控制电路接收的控制信号将至少两个不同的偏置电位施加到高频开关晶体管的衬底。

    Semiconductor device and driving system
    20.
    发明授权
    Semiconductor device and driving system 有权
    半导体器件和驱动系统

    公开(公告)号:US09564844B2

    公开(公告)日:2017-02-07

    申请号:US14806917

    申请日:2015-07-23

    发明人: Ikuo Fukami

    摘要: An output MOS transistor has a drain connected with a power supply and a source connected with an output terminal. The short-circuit MOS transistor has a source connected with the output terminal. The short-circuit MOS transistor is formed in a semiconductor substrate connected with the power supply. A switching device is formed in a semiconductor region which is formed in the semiconductor substrate, and contains a first diffusion layer connected with the gate of the output MOS transistor and a second diffusion layer formed in the semiconductor region and connected with the drain of the short-circuit MOS transistor.

    摘要翻译: 输出MOS晶体管具有与电源连接的漏极和与输出端子连接的源极。 短路MOS晶体管具有与输出端子连接的源极。 短路MOS晶体管形成在与电源连接的半导体衬底中。 开关器件形成在形成在半导体衬底中的半导体区域中,并且包含与输出MOS晶体管的栅极连接的第一扩散层和形成在半导体区域中并与短路的漏极连接的第二扩散层 电路MOS晶体管。