The ATLS500MA106 is an electronic module designed for driving diode lasers with up to 500mA extra low noise current. Figure 1 shows physical photo of ATLS500MA106.The output voltage is 1.5V to 4V when powered by a 5V power supply.

The controller has temperature compensation network so that the output current maintains the same even as the controller temperature rises.

In case the controller temperature exceeds a preset limit, 120°C,  the controller will be shut down by itself to prevent the controller from being damaged by the over heat. The output current of the ATLS500MA106 can be set by an  input voltage linearly or modulated by an external signal of up
to 100kHz in bandwidth, resulting in a minimum 1.5μS rise and fall times at the output current.
A highly stable low noise 2.5V reference voltage is provided internally for setting the output current. This reference can also be used as the voltage reference for external ADCs (Analog to Digital Converters) and/or DACs (Digital to Analog Converters) which are utilized for converting the analog signals, such as LIO which represents the output current, into digital signals, and/or converting the digital signals into analog ones for setting the analog voltages, such as LIS which sets the output current.