摘要： 将运算放大器和数字电位器添加到一个标准的激光驱动电路产生的变化是电位器的值的线性函数的激光的功率设置点温度，生成当前光电二极管响应的驱动程序。Maxim > App Notes > Digital Potentiometers Optoelectronics Keywords: laser drivers, digital resistors, op amps, photodiodes Mar 31, 2011 APPLICATION NOTE 4557 Digital Resistor Sets Operating Power for Laser Driver By: James Horste Abstract: Adding an op amp and a digital potentiometer to a standard laser-driver circuit produces a driver that varies the laser's power-set point in response to temperature, generating a photodiode current that is a linear function of the potentiometer value. A similar version of this article appeared in the March 15, 2007 issue of ED magazine. The MAX3740 VCSEL laser driver and DS1859 dual, temperature-controlled digital resistor are popular choices for SFP and SFF fiber-optic systems, due to their sm……