摘要：运算放大器和数字电位器中添加一个标准的激光驱动器电路产生一个驱动程序，在反应温度​​变化的激光功率设定点，这是一个电位值的线性函数产生一个光电二极管电流。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……