本文介绍了一种新型LD/EA驱动器 .该驱动器采用四个塑封NPN多晶硅双极晶体管和一个常规硅双极晶体管作为有源器件 ,可以在 2 5Ω负载上产生 5 0mA的调制电流用于直接驱动激光器或在 5 0Ω负载上产生 2 .5V的调制电压用于驱动EA调制器 .该驱动器的工作速率为DC至 3Gb/s,调制电流和偏置电流调节范围分别为 5～ 5 0mA ,上升、下降时间小于 10 0ps. This article describes a new type of LD / EA driver that uses four plastic NPN polycrystalline bipolar transistors and one conventional silicon bipolar transistor as active devices to generate 50 mA of modulated current on a 25 Ω load for direct drive The laser or a modulation voltage of 2.5V on a 50Ω load is used to drive the EA modulator.The operating speed of the driver is DC to 3Gb / s, modulation current and bias current adjustment range are respectively 5 ~ 50mA, Fall time is less than 10 0ps.