公开(公告)号：US20110156764A1

公开(公告)日：2011-06-30

申请号：US12971617

申请日：2010-12-17

申请人： Kai-Cheung JUANG ,  Hsin-Hong HOU ,  Yung-Pin LEE

发明人： Kai-Cheung JUANG ,  Hsin-Hong HOU ,  Yung-Pin LEE

IPC分类号： H03K3/00

CPC分类号： H03K19/00361 ,  H03K19/018521 ,  H04L25/0264

摘要： An output stage configured to control a driving voltage thereof is provided. The output stage includes: a first switching current module, coupled to a node for outputting a first current; a second switching current module, coupled to the node for outputting a second current; a switching capacitor module with a capacitance, coupled to the node; a calibrating control circuit, for calibrating the first current, the second current and the capacitance; a time constant calibrating circuit, for generating a reference slew rate, and controlling the calibrating control circuit to selectively calibrate the first current, the second current and the capacitance, such that a ratio of the first current and the capacitance and the ratio of the second current and the capacitance conform to the reference slew rate; and a voltage clamper for setting a high/low voltage range and limiting a amplitude of the driving voltage within the high/low voltage range.

摘要翻译： 提供了用于控制其驱动电压的输出级。 输出级包括：耦合到节点的第一开关电流模块，用于输出第一电流; 第二开关电流模块，耦合到所述节点，用于输出第二电流; 具有耦合到所述节点的电容的开关电容器模块; 校准控制电路，用于校准第一电流，第二电流和电容; 时间常数校准电路，用于产生参考转换速率，以及控制所述校准控制电路选择性地校准所述第一电流，所述第二电流和所述电容，使得所述第一电流和所述电容的比率以及所述第二电流 电流和电容符合参考压摆率; 以及用于设定高/低电压范围并将驱动电压的幅度限制在高/低电压范围内的电压钳位器。