ATLSXA201D is a high efficiency constant current laser driver module. There are 6 laser drivers in this series, of which the largest current one can drive 6A diode lasers. The “xA” in the model represents the maximum output current of the laser driver module, which can be: 500mA, 1A, 2A, 3A, 4A and 6A respectively. The ATLSxA201D series diode laser drivers are the upgraded alternative to the CWD-01-V2 laser drivers with shorter start-up times. This series laser driver modules feature low noise, high stability, zero EMI and small package.
The following is the block diagram of ATLSxA201D.
The block diagram shows that the laser driver provides these the functions: laser constant current control, laser current monitoring, over current and thermal protection, laser current control indication, laser diode status indication, soft start, and shut down. Please check the application notes for more information on these features:
http://www.analogtechnologies.com/document/ATLS500MA201D.pdf
This laser driver module ATLSxA201D can be used with the evaluation board ATLSXA201DEV1.0. The evaluation board has a virtual laser that can be used to simulate how the actual laser diode would be driven by the laser driver. At the same time, users can set and monitor the output current, monitor the working status of the driver by the evaluation board. Please check the application notes for more information about the evaluation board:
http://www.analogtechnologies.com/document/ATLS201DEV1.0.pdf
The laser driver is powered by a DC voltage, 5V. There is a switch S1 on the bottom left side of the board. Turn the switch S1 to its upper position to turn on the laser driver. There is a switch bank on the bottom center of the board. Turn the switch S2 to the ON position, to connect the “dummy laser” to the laser driver module. Turning switches S3, S4, S5 and S6, up and down will increase and decrease the forward voltage of the dummy laser. Turn the switch S7 to its lower off position, the output current can go through the ammeter. The current of the laser driver can be changed by adjusting the potentiometer on the left side of the switch bank.
More laser driver modules and evaluation board, please see here:
