激光测距发射电路的设计

摘要

为了激光测距发射电路的集成化要求,设计了一种小型半导体激光器驱动电源,该驱动电源可以用于激光测距中.驱动电路采用MAX3656集成电路作为核心元件,可以通过调节电路中电阻的阻值设置所需要的调制电流和偏置电流.半导体激光器的输出可以直接通过数字电路产生的信号控制,可以输出上升沿时间约为4 ns、脉冲宽度为8 ns的脉冲,这些特性可以用于脉冲激光测距中.%In order to integrate the laser ranging transmitting circuit , a kind of small driver for semiconductor laser is designed, which can be used in laser ranging. Driving circuit uses the MAX3656 integrated circuit as a core component , which can be set by adjusting the resistance of circuit resistance required modulation current and bias current. . Semiconductor laser output can be directly control by the signal of digital circuits. The current can output pulse that the time of rising edge is about 4 ns , and the depends is 8ns, these features can be used in pulse laser ranging.