公开(公告)号：US20080088370A1

公开(公告)日：2008-04-17

申请号：US11889417

申请日：2007-08-13

申请人： Seung-Bin You ,  Chun-Kyun Seok

发明人： Seung-Bin You ,  Chun-Kyun Seok

IPC分类号： H03F3/217

CPC分类号： H03F3/2171

摘要： A digital amplifier, a noise reduction circuit and a method of reducing noise from an output signal of a digital amplifier are described in this disclosure. The digital amplifier includes a driving circuit for providing a driving signal, a filter for filtering the driving signal and providing the filtered driving signal to a resistive load connected between an output node and a reference node of the digital amplifier, a noise reduction circuit controlling the reference node to be in a floating state to reduce noise while the filtered driving signal provided to the load via the output node stabilizes.

摘要翻译： 在本公开中描述了数字放大器，降噪电路和降低来自数字放大器的输出信号的噪声的方法。 数字放大器包括用于提供驱动信号的驱动电路，用于对驱动信号进行滤波的滤波器，并将经滤波的驱动信号提供给连接在数字放大器的输出节点和参考节点之间的电阻负载;噪声降低电路， 参考节点处于浮置状态以降低噪声，同时经由输出节点提供给负载的经滤波的驱动信号稳定。

公开(公告)号：US20080129377A1

公开(公告)日：2008-06-05

申请号：US11998216

申请日：2007-11-29

申请人： Seung-Bin You ,  Chun-Kyun Seok ,  Yong-Jin Cho

发明人： Seung-Bin You ,  Chun-Kyun Seok ,  Yong-Jin Cho

IPC分类号： H03F3/38 ,  G05F1/44

CPC分类号： G05F1/56 ,  H03F3/38

摘要： A voltage regulator includes a voltage driving circuit and a current sinking unit. The voltage driving circuit is controlled to maintain an output signal at an output node. The current sinking unit is coupled to the output node for generating a sinking current for diverting an external current to the output node. An error amplifier generates a control signal from the output signal and a reference signal. The voltage driving circuit and the current sinking unit are controlled according to such a control signal.

摘要翻译： 电压调节器包括电压驱动电路和电流吸收单元。 控制电压驱动电路以在输出节点处保持输出信号。 电流吸收单元耦合到输出节点，用于产生用于将外部电流转向输出节点的吸收电流。 误差放大器从输出信号和参考信号产生控制信号。 电压驱动电路和电流吸收单元根据这样的控制信号进行控制。