1161 Ringwood Ct, #110, San Jose, CA 95131, U. S. A. Tel.: (408) 748-9100, Fax: (408) 770-9187

www.analogtechnologies.com

Copyrights 2000-2022, Analog Technologies, Inc. All Rights Reserved. Updated on 1/17/2022

Email: staff@analogti.com/sales@analogti.com

1

Analog Technologies

ATLS100MA103

Low Noise Constant Current Laser Controller

Figure 1. Physical Photo of ATLS100MA103S

FEATURES

°C

APPLICATIONS

Driving laser diodes with low noise, including DPSSL,

EDFA, SOA, fiber laser, direct diode lasers, etc.

DESCRIPTION

The ATLS100MA103 is an electronic module designed for

driving diode lasers with up to 100mA low noise current.

Figure 1 shows physical photo of ATLS100MA103.The

power supply.

When the maximum power consumed by the controller is

maintained to <1W, it does not require a heat sink to operate.

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 ATLS100MA103 can be set by an

input voltage linearly or modulated by an external large signal

of up to 1MHz in bandwidth, resulting in a minimum 170nS

rise and fall times (Large signal) 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.

The ATLS100MA103 is packaged in a 6 sided metal enclosure,

which blocks EMIs (Electro-Magnetic Interferences) to prevent

the controller and other electronics from interfering each other.

This laser driver can be evaluated by our evaluation board,

ATLS1A103DEV1.0.

There are 2 packaging versions available: DIP through hole

package and surface mount type.

types of modules can only be soldered manually

on the board by a solder iron of < 310ºC (590ºF),

not go through a reflow oven process.

Figure 2. Pin Names and Locations

Figure 2 is the actual size top view of the ATLS100MA103,

which shows the pin names and locations. Its thickness is 5mm.

Table 1 shows the pin function descriptions.

Table 1. Pin Function Descriptions

Pin #

Pin

Name

Pin Type

Description

1

SDN

Digital input

For ATLS100mA103: Shut down control. Negative logic. When the voltage is <0.7V,

shutdown on; when the voltage is >1 V, shutdown off.

For ATLS100mA103-PD: Shut down control. Positive logic. There is a pull-down resistor

of 100k to the ground.

20.14

VPS

PGND

LDC

LDA

TMPO

LPGD

GND

2.5VR

LILM

LIS

LIO

SDN

1

3

4

5

6

2

12

10

9

8

7

11

14.5