Frequently Asked Questions and Answers.（Laser Drivers）

Frequently Asked Questions and Answers.1. Q: How to achieve highest digital modulation speed on a laser controller's output current?
A: For laser drivers ATLSXA201 and ATLSXA202, LIS pin should be toggled between these 2 voltages: a high value corresponding to the operation current and a low value corresponding to half of the threshold current of the laser the driver is driving.
For laser drivers: ATLSXA212, ATLSXA214, ATLSXA216, ATLSXA217 and ATLSXA218, set a high voltage value on the LISH pin corresponding to the laser operating current; set a low voltage value on the LISL pin corresponding to half of the threshold current of the laser the driver is driving. Then use a digital signal to drive the PCN pin.