公开(公告)号：EP2624483A1

公开(公告)日：2013-08-07

申请号：EP11829183.0

申请日：2011-09-28

申请人： Yazaki Corporation

发明人： YAMAGATA Chiemi ,  NAKATA Atsushi ,  NOGUCHI Kengo ,  AKAZAWA Yukio

IPC分类号： H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/26 ,  H04B10/28

CPC分类号： H04B10/564 ,  H04B10/50

摘要： Provided is a signal transmission device which achieves temperature compensation of a light-emitting element by a simple configuration without increasing the size of the device. An element driving IC (20) has a reference voltage generation portion (41) for generating a predetermined voltage (A) and a voltage (B) depending on a temperature, and a temperature compensation portion (42) for controlling a bias current (I bias ) and a modulation current (I mod ) depending on the temperature. The temperature compensation portion (42) reproduces a temperature-current characteristics of the light emitting element (11) represented by a straight line of which a gradient is changed from negative to positive at a change-point as a boundary, based on the voltages (A, B) applied from the reference voltage generation portion (41), thereby performing current control depending on the temperature

摘要翻译： 提供了一种信号传输装置，其通过简单的配置来实现发光元件的温度补偿，而不增加装置的尺寸。 元件驱动IC（20）具有用于根据温度产生预定电压（A）和电压（B）的基准电压产生部分（41）以及用于控制偏置电流（Ibias）的温度补偿部分（42） ）和取决于温度的调制电流（Imod）。 温度补偿部分（42）基于电压（V）来再现由渐变在作为边界的变化点处从负变正的直线表示的发光元件（11）的温度 - 电流特性 A，B），从而根据温度执行电流控制