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Analog Technologies

Evaluation Board for ATLS1A103D

ATLS1A103DEV1.0

Low Noise Laser Driver ATLS1A103D

Evaluation Board Rev. 1.0

Figure 1. Physical Photo of ATLS1A103DEV1.0

FEATURES

APPLICATIONS

Evaluate these laser drivers:

ATLS100MA103D, ATLS200MA103D, ATLS250MA103D,

ATLS500MA103D and ATLS1A103D; ATLS100MA104D,

ATLS250MA104D, ATLS500MA104D and ATLS1A104D;

ATLS250MA106D and ATLS500MA106D.

INTRODUCTION

The ATLS1A103D is an electronic module designed for

driving diode lasers with ultra low noise current and DIP

package. The output voltage range is from 1.5V to 4V when

powered by a 5V power supply.

This evaluation board, ATLS1A103DEV1.0, is designed for

evaluating ATLS1A103D laser driver module conveniently,

can also be used for evaluating ATLS100MA103D,

ATLS200MA103D, ATLS250MA103D, ATLS500MA103D,

and so on. It is recommended to read this application note with

the driver datasheet which provides more detail information

about the specifications and application guidance for the laser

driver module.

The main purpose of using the evaluation board is to let the

controller drive a voltage configurable unbreakable dummy

laser diode on the board to emulate users’ actual expensive

laser diode with a programmable current. After making sure

the controller works properly and all the features and the set-

values meet the requirements of the application, the users can

disconnect the dummy laser from the controller by turning a

switch and connect a real diode laser onto proper connections

of the board. The user will be able to set and monitor the

output current, read the controller’s temperature, monitor the

working status of the controller, etc.

BOARD DESCRIPTION

The ATLS1A103DEV1.0 Evaluation Board is consisted of a

complete application circuit for driving a laser diode. It can set

the output current, the output current limit, has an LED for

indicating the working status of the controller, has numerous

connection pads and terminal connectors for making

connections with external components and instruments. Its

physical photo of ATLS1A103DEV1.0 is shown in Figure 1.

The silkscreen layer of the evaluation board is shown in

Figure 2 with other top layers, including top silkscreen, top

copper, top solder mask, and multilayer (vias). Figure 3 only

shows the image of top silkscreen layer. There is no

component in the bottom side of the board, so that there is no

bottom silkscreen layer image.

Figure 2. Top Silkscreen Layer with Other Top Layers

There are solder pads on the left, top and the right edges of the

board. These pads can be used for connecting the external

instruments or components with and the connections can be

made by either soldering wires or clipping by alligator clips.

There are 3 terminal blocks also located on the left, top and

the right side of the board, their connectors are for the same

nodes of the solder pads. See the silkscreen image in Figure 3.