公开(公告)号：KR1020110073171A

公开(公告)日：2011-06-29

申请号：KR1020100027745

申请日：2010-03-29

Applicant: 한국전자통신연구원 ,  서울대학교산학협력단

Inventor： 박정우 ,  황문상 ,  박규상 ,  정덕균 ,  김경옥

IPC: H03F3/08 ,  H03F3/45

CPC classification number: H03F3/082 ,  H03F1/223 ,  H03F2200/36 ,  H04B10/693

Abstract: PURPOSE: A trans-impedance amplifying circuit is provided to improve the integrity of the trans-impedance amplifying circuit by reducing the size of electrostatic capacity. CONSTITUTION: A photo diode(310) converts an optical signal into an electric signal. A cascode type input terminal(320) is in connection with the photo diode. A first transistor(M1) forms a current path between the amplifying terminal and the output terminal of the photo diode according to the voltage level of a first node. A second transistor(M2) forms a current path between a second node and the ground according to the output voltage level of the photo diode. An amplifying terminal(330) amplifies the output of the input terminal.

Abstract translation: 目的：提供一种跨阻抗放大电路，通过减小静电电容的尺寸来提高跨阻抗放大电路的完整性。 构成：光电二极管（310）将光信号转换为电信号。 共源共栅型输入端子（320）与光电二极管连接。 第一晶体管（M1）根据第一节点的电压电平在光电二极管的放大端与输出端之间形成电流路径。 第二晶体管（M2）根据光电二极管的输出电压电平在第二节点和地之间形成电流路径。 放大端子（330）放大输入端子的输出。