公开(公告)号：US07816978B1

公开(公告)日：2010-10-19

申请号：US12505535

申请日：2009-07-20

申请人： Tien-Yu Lo ,  Chuan-Cheng Hsiao ,  Kang-Wei Hsueh

发明人： Tien-Yu Lo ,  Chuan-Cheng Hsiao ,  Kang-Wei Hsueh

IPC分类号： H03K5/00

CPC分类号： H03H1/02 ,  H03H7/0153 ,  H03H2210/043

摘要： An operating circuit includes an amplifier having a first input terminal coupled to a reference voltage; a first transconducting element for selectively generating a first current; a second transconducting element for selectively generating a second current; a resistive element having a first terminal coupled to the first transconducting element; a capacitive element having a first terminal selectively coupled to the second transconducting element; and a switching device. The switching device has a first configuration to connect the first terminal of the capacitive element to the second transconducting element and connect the first terminal of the resistive element to a second input terminal of the amplifier, and has a second configuration to disconnect the first terminal of the capacitive element from the second transconducting element and connect the second input terminal of the amplifier to the first terminal of the capacitive element instead of the first terminal of the resistive element.

摘要翻译： 操作电路包括具有耦合到参考电压的第一输入端的放大器; 用于选择性地产生第一电流的第一跨导元件; 用于选择性地产生第二电流的第二跨导元件; 电阻元件，其具有耦合到所述第一跨导元件的第一端子; 电容元件，其具有选择性地耦合到所述第二跨导元件的第一端子; 和开关装置。 开关装置具有将电容元件的第一端子连接到第二跨导元件并将电阻元件的第一端子连接到放大器的第二输入端子的第一配置，并且具有第二配置以将第一端子 来自第二跨导元件的电容元件，并且将放大器的第二输入端子连接到电容元件的第一端子，而不是电阻元件的第一端子。