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11. 发明申请

US20060034359A1 xDSL multistandard driver circuit 有权
标题翻译： xDSL多标准驱动电路
公开(公告)号：US20060034359A1
公开(公告)日：2006-02-16
申请号：US11199637
申请日：2005-08-09
申请人： Jorg Hauptmann , Markus Terschluse
发明人： Jorg Hauptmann , Markus Terschluse
IPC分类号： H04B1/38 , H04B3/00
CPC分类号： H04L27/0002 , H03F1/025 , H03F3/45475
摘要： An electric circuit for amplifying an xDSL signal comprises an operational amplifier and a signal monitoring circuit. The operational amplifier is configured to amplify the xDSL signal, is powered by a variable voltage supply and has a gain which is adjustable by an operating mode control signal. The signal monitoring circuit is activated by the operating mode control signal and is configured, when activated by the operating mode control signal, to generate a control signal to adjust the voltage of the variable voltage supply in order to adjust the maximal signal swing of the output signal of said operational amplifier. The control signal is generated by comparing the amplitude of the xDSL signal applied to the electric circuit with an amplitude threshold value.
摘要翻译：用于放大xDSL信号的电路包括运算放大器和信号监视电路。运算放大器配置为放大xDSL信号，由可变电源供电，并具有可通过工作模式控制信号调节的增益。信号监视电路由操作模式控制信号激活，并且被配置为当由操作模式控制信号激活时，产生控制信号以调节可变电压源的电压，以便调整输出的最大信号摆幅所述运算放大器的信号。通过将施加到电路的xDSL信号的振幅与振幅阈值进行比较来生成控制信号。

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