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    Amplifier input switch configuration with improved PSRR
    1.
    发明公开
    Amplifier input switch configuration with improved PSRR 审中-公开
    VerstärkereingangsschalterkonfigurationmiterhöhterPSRR

    公开(公告)号：EP1811653A1

    公开(公告)日：2007-07-25

    申请号：EP06100662.3

    申请日：2006-01-20

    申请人： STMicroelectronics SA ,  STMicroelectronics Design and Application S.R.O.

    发明人： Saman, Hynek ,  Murin, Peter ,  Boksa, Martin ,  Panus, Pavel

    IPC分类号： H03F1/30 ,  H03F3/217 ,  H03F3/72 ,  G05F1/575

    CPC分类号： H03F1/30 ,  H03F1/26 ,  H03F3/45475 ,  H03F3/45632 ,  H03F3/72 ,  H03F2200/372 ,  H03F2200/459 ,  H03F2203/45534

    摘要： The invention concerns a switch comprising a first transistor comprising a first main terminal connected to a first switch node, a second main terminal connected to a second switch node and a control terminal, the second switch node being connected to a first clean voltage level, and first control means connected to said control terminal of said first transistor, comprising a first node connected to said first clean voltage level, a second node connected to a second voltage level, and a control input node for receiving a first input control signal variable between a supply voltage level and a third voltage level, said first control means arranged to selectively connect said control terminal of said first transistor to one of said first node and said second node based on said first input control signal.

    摘要翻译： 本发明涉及一种包括第一晶体管的开关，第一晶体管包括连接到第一开关节点的第一主端子，连接到第二开关节点的第二主端子和控制端子，第二开关节点连接到第一清洁电压电平，以及 连接到所述第一晶体管的所述控制端的第一控制装置，包括连接到所述第一清洁电压电平的第一节点，连接到第二电压电平的第二节点和用于接收第一输入控制信号变量的控制输入节点 电源电压和第三电压电平，所述第一控制装置被布置成基于所述第一输入控制信号选择性地将所述第一晶体管的控制端连接到所述第一节点和所述第二节点之一。

    Amplifier having an output protection, in particular operational amplifier for audio application
    3.
    发明公开
    Amplifier having an output protection, in particular operational amplifier for audio application 有权
    Verstärkermit Ausgangsschutz，insbesondereOperationsverstärkerfürAudioanwendung

    公开(公告)号：EP1978636A1

    公开(公告)日：2008-10-08

    申请号：EP07105835.8

    申请日：2007-04-06

    申请人： STMicroelectronics Design and Application S.R.O.

    发明人： Murin, Peter ,  Saman, Hynek

    IPC分类号： H03F1/52

    CPC分类号： H03F3/45179 ,  H03F1/0272 ,  H03F1/342 ,  H03F1/52 ,  H03F1/526 ,  H03F3/185 ,  H03F3/3022 ,  H03F2200/03 ,  H03F2200/426 ,  H03F2200/453

    摘要： An amplifier (1) with an output protection having an input stage (2) defining a feedback node (8), an output stage (40) connected to the feedback node (8) and defining an output node supplying an output voltage, and a feedback stage connected between the output nodes (4a,3a) and the feedback node. A mirror stage (4) is connected to the feedback node (3a) and has a same structure as the output stage (3), the mirror stage defining a reference node (4a) connected to the feedback stage (5) for generating a reference voltage to be compared to the output voltage by the feedback stage. The feedback stage (5) generates a current limitation signal fed to the feedback node when a difference between the output and the reference voltages is higher than a threshold.

    摘要翻译： 具有输出保护的放大器（1）具有限定反馈节点（8）的输入级（2），连接到反馈节点（8）并且定义提供输出电压的输出节点的输出级（40），以及 反馈级连接在输出节点（4a，3a）和反馈节点之间。 反射级（4）连接到反馈节点（3a）并且具有与输出级（3）相同的结构，镜级定义连接到反馈级（5）的参考节点（4a），用于产生参考 电压将通过反馈级与输出电压进行比较。 当输出和参考电压之间的差高于阈值时，反馈级（5）产生馈送到反馈节点的电流限制信号。